Clear[y];
Clear[t];
Clear[a];
Clear[b];
Clear[c];
Clear[d];
Clear[e];
Clear[f];
Clear[g];
Clear[all];
y[t_]=t;
a=RandomChoice[{1.5,1,2,0.75,0.8,1.3,1.14,0.81,0.51,1.919,0.920,1.75,2.5}];
b=RandomChoice[{1.5,1,2,0.75,0.8,1.14,0.81,0.51,1.919,0.920,1.75,3}];
c=RandomChoice[{1.5,1,2,0.75,0.8,1.14,0.81,0.51,1.919,0.920,1.75,1.65}];
d=RandomChoice[{1.5,1,2,0.75,0.8,1.14,0.81,0.51,1.919,0.920,1.75,0.25}];
e=RandomChoice[{1.5,1,2,0.75,0.8,1.14,0.81,0.51,1.919,0.920,1.75,1.3,2.1}];
f=RandomChoice[{1.5,1,2,0.75,0.8,1.14,0.81,0.51,1.919,0.920,1.75,1.2,1.6}];
g=RandomChoice[{1.5,1,2,0.75,0.8,1.14,0.81,0.51,1.919,0.920,1.75,11,1.7}];

all=RandomChoice[{a,b,c,d,e,f,g}];
(*bor=Rectangle[{-10,-10},{-9,-9}];
bor1=Rectangle[{9,9},{10,10}];
bor2=Rectangle[{10,-10},{9,-9}];
bor3=Rectangle[{-10,10},{-9,9}];
tan1=Rectangle[{-8,6},{-1,7}];
tan2=Rectangle[{-5,-1},{-4,7}];
tan3=Rectangle[{-8,2},{-7,7}]+Rectangle[{-1,-1},{-4,7}];
tan4=Rectangle[{-1,-1},{-4,7}];*)
tan=Rectangle[{-8,4-t*0.75},{-7,5-t*0.75}];(*上の天*)
tan1=Rectangle[{-6,4-t*0.5},{-5,5-t*0.5}];(*上の天*)
tan2=Rectangle[{-4,4-t},{-3,5-t}];(*上の天*)
tan3=Rectangle[{-8,2-t},{-7,3-t}];(*上とこ*)
tan10=Rectangle[{-7,2-t*a},{-6,3-t*a}];
tan11=Rectangle[{-6,2-t*b},{-5,3-t*b}];
tan12=Rectangle[{-5,2-t*c},{-4,3-t*c}];
tan13=Rectangle[{-4,2-t*d},{-3,3-t*d}];
tan14=Rectangle[{-3,2-t*e},{-2,3-t*e}];
tan15=Rectangle[{-9,2-t*a},{-8,3-t*a}];
tan20=Rectangle[{-9,1-t*b},{-8,2-t*b}];(*左縦*)
tan21=Rectangle[{-9,0-t*c},{-8,1-t*c}];
tan22=Rectangle[{-9,-1-t*a},{-8,0-t*a}];
tan23=Rectangle[{-9,-2-t*d},{-8,-1-t*d}];
tan30=Rectangle[{-6,2-t*e},{-5,3-t*e}];(*縦真ん中*)
tan31=Rectangle[{-6,1-t*a},{-5,2-t*a}];
tan32=Rectangle[{-6,0-t*d},{-5,1-t*d}];
tan33=Rectangle[{-6,-1-t*e},{-5,0-t*e}];
tan37=Rectangle[{-6,-3-t*c},{-5,-2-t*c}];
tan38=Rectangle[{-6,-4-t*e},{-5,-3-t*e}];
tan39=Rectangle[{-6,-5-t*a},{-5,-4-t*a}];
tan40=Rectangle[{-6,-6-t*0.75},{-5,-5-t*0.75}];
tan41=Rectangle[{-3,-2-t*a},{-2,-1-t*a}];
tan42=Rectangle[{-3,-1-t*e},{-2,0-t*e}];
tan43=Rectangle[{-3,0-t*c},{-2,1-t*c}];
tan44=Rectangle[{-3,1-t*d},{-2,2-t*d}];(*縦線左*)
tan50=Rectangle[{-8,0-t*a},{-7,1-t*a}];
tan51=Rectangle[{-7,0-t*b},{-6,1-t*b}];
tan52=Rectangle[{-6,0-t*e},{-5,1-t*e}];
tan53=Rectangle[{-5,0-t*d},{-4,1-t*d}];
tan54=Rectangle[{-4,0-t*e},{-3,1-t*e}];
tan60=Rectangle[{-3,0-t*c},{-2,1-t*c}];(*横真ん中*)
tan61=Rectangle[{-8,-2-t*d},{-7,-1-t*d}];
tan62=Rectangle[{-7,-2-t*a},{-6,-1-t*a}];
tan63=Rectangle[{-6,-2-t*e},{-5,-1-t*e}];
tan64=Rectangle[{-5,-2-t*a},{-4,-1-t*a}];
tan65=Rectangle[{-4,-2-t*c},{-3,-1-t*c}];
tan70=Rectangle[{-3,-2-t},{-2,-1-t}];(*横下*)
tan71=Rectangle[{-10,-4-t*1.5},{-9,-3-t*1.5}];
tan72=Rectangle[{-9,-4-t*1.4},{-8,-3-t*1.4}];
tan73=Rectangle[{-8,-4-t*1.3},{-7,-3-t*1.3}];
tan74=Rectangle[{-7,-4-t*1.2},{-6,-3-t*1.2}];
tan75=Rectangle[{-6,-4-t*1.1},{-5,-3-t*1.1}];
tan76=Rectangle[{-5,-4-t*1.0},{-4,-3-t*1.0}];
tan77=Rectangle[{-4,-4-t*0.9},{-3,-3-t*0.9}];
tan78=Rectangle[{-3,-4-t*0.8},{-2,-3-t*0.8}];
tan79=Rectangle[{-2,-4-t*0.7},{-1,-3-t*0.7}];

tani={tan,tan1,tan2,tan3,tan10,tan11,tan12,tan13,tan14,tan15,tan20,tan21,tan22,tan23,tan30,tan31,tan32,tan33,tan37,tan38,tan39,tan40,tan41,tan42,tan43,tan44,tan50,tan51,tan52,tan53,tan54,tan60,tan61,tan62,tan63,tan64,tan65,tan70,tan71,tan72,tan73,tan74,tan75,tan76,tan77,tan78,tan79};
i=Rectangle[{1,1-t*f},{2,2-t*f}];(*harai*)
i1=Rectangle[{2,1-t*g},{3,2-t*g}];
i2=Rectangle[{2,2-t*d},{3,3-t*d}];
i3=Rectangle[{2,3-t*a},{2,4-t*a}];
i4=Rectangle[{3,2-t*f},{4,3-t*f}];
i5=Rectangle[{3,3-t*g},{4,4-t*g}];
i6=Rectangle[{4,3-t*f},{5,4-t*f}];
i7=Rectangle[{4,4-t*a},{5,5-t*a}];
i8=Rectangle[{3,2-t*a},{4,3-t*a}];(*tate*)
i9=Rectangle[{3,1-t*b},{4,2-t*b}];
i10=Rectangle[{3,0-t*c},{4,1-t*c}];
i11=Rectangle[{3,-1-t*d},{4,0-t*d}];
i12=Rectangle[{3,-2-t*e},{4,-1-t*e}];
i13=Rectangle[{3,-3-t*f},{4,-2-t*f}];
i14=Rectangle[{3,-4-t*g},{4,-3-t*g}];
i15=Rectangle[{3,-5-t*a},{4,-4-t*a}];
i16=Rectangle[{3,-6-t*e},{4,-5-t*e}];
i17=Rectangle[{7,4-t*g},{8,5-t*g}];
i18=Rectangle[{5.5,2-t*a},{6,3-t*a}];
i19=Rectangle[{6,2-t*d},{7,3-t*d}];
i20=Rectangle[{7,2-t*a},{8,3-t*a}];
i21=Rectangle[{8,2-t*d},{9,3-t*d}];
i22=Rectangle[{9,2-t*f},{9.5,3-t*f}];(*yokoue*)
i23=Rectangle[{7,3-t*f},{8,4-t*f}];(*ue*)

i24=Rectangle[{6,1-t*a},{7,2-t*a}];
i25=Rectangle[{6,0-t*b},{7,1-t*b}];
i26=Rectangle[{6,-1-t*c},{7,0-t*c}];
i27=Rectangle[{6,-2-t*d},{7,-1-t*d}];
i28=Rectangle[{6,-3-t*e},{7,-2-t*e}];
i29=Rectangle[{6,-4-t*f},{7,-3-t*f}];
i30=Rectangle[{6,-5-t*g},{7,-4-t*g}];
i31=Rectangle[{8,1-t*a},{9,2-t*a}];
i32=Rectangle[{8,0-t*f},{9,1-t*f}];
i33=Rectangle[{8,-1-t*g},{9,0-t*g}];
i34=Rectangle[{8,-2-t*a},{9,-1-t*a}];
i35=Rectangle[{8,-3-t*c},{9,-2-t*c}];
i36=Rectangle[{8,-4-t*c},{9,-3-t*c}];
i37=Rectangle[{8,-5-t*a},{9,-4-t*a}];
i38=Rectangle[{5,-6-t*g},{6,-5-t*g}];
i39=Rectangle[{6,-6-t*e},{7,-5-t*e}];
i40=Rectangle[{7,-6-t*c},{8,-5-t*c}];
i41=Rectangle[{8,-6-t*e},{9,-5-t*e}];
i42=Rectangle[{9,-6-t*g},{10,-5-t*g}];(*yokosita*)
i43=Rectangle[{4.5,-6-t*all},{5,-5-t*all}];(*yokosita*)


gifs={};



options={
Boxed->False,
PlotRange->{{-10,10},{-10,10}}
};
Do[
AppendTo[gifs,
Graphics[
{tani,i,i1,i2,i3,i4,i5,i6,i7,i8,i9,i10,i11,i12,i13,i14,i15,i16,i17,i18,i19,i20,i21,i22,i23,i24,i25,i26,i27,i28,i29,i30,i31,i32,i33,i34,i35,i36,i36,i37,i38,i39,i40,i41,i42,i43},options]
],{t,0,10,0.075}
]
ListAnimate[gifs,AnimationRunning->False]
(*Graphics[{tan,tan1,tan2,tan3,tan10,tan11,tan12,tan13,tan14,tan15,tan20,tan21,tan22,tan23,tan30,tan31,tan32,tan33,tan34,tan35,tan36,tan37,tan38,tan39,tan40,tan41,tan42,tan43,tan44,tan50,tan51,tan52,tan53,tan54,tan60,tan61,tan62,tan63,tan64,tan65,tan70,tan71,tan72,tan73,tan74,tan75,tan76,tan77,tan78,tan79
},options]*)