C22212323232133313113313331333132313331323132322221212212113333221   >>    C2221232323213331311331333133313231333132313232222121221211333322   <<    C22212323232133313113313331333132313331323132322221212212113333223   >>      C22212323232133313113313331333132313331323132322221212212113333222   >>