dc -e "
	4dio ?
	[c10121221132213221002131113221322P]sy d33%0=y
	[[c1002131113221322P]sy d11%0=y]sy z1=y
	[[c1012122113221322P]sy d3%0=y]sy z1=y
	[n]sy z1=y
	22P
"