a=a*a+a*anaaaba+a*anacada+a+a*a*a*ananaaaca*ana+a*aaada*abaca*abad
empty_shape
a=a*a+a+a*a*ananaaa*anabaca+a+a*a*ananada*anaeafa+a+a+a+a*a*a*a*a*ananananaaada*a*a*ananana+a*aaaea*abada*a*anana+a+a*aaafa*abaea*acada*ana+a*abafa*acaea*acaf

7a36dab69734149460ec5a71984895fa 1H0
c86c05375df23e8f1fcc8485ae1b98d8 1H2
