C22212323232133313113313331333132313331323132322221212212111231   >>    C2221232323213331311331333133313231333132313232222121221211123   <<    C22212323232133313113313331333132313331323132322221212212111233   >>      C22212323232133313113313331333132313331323132322221212212111232   >>