C22212323232133313113313331333132313331323132322221212233231111231   >>    C2221232323213331311331333133313231333132313232222121223323111123   <<    C22212323232133313113313331333132313331323132322221212233231111233   >>      C22212323232133313113313331333132313331323132322221212233231111232   >>