C132233133112121111331333133313231333132333131211111333132321123231211   >>    C13223313311212111133133313331323133313233313121111133313232112323121   <<    C132233133112121111331333133313231333132333131211111333132321123231213   >>      C132233133112121111331333133313231333132333131211111333132321123231212   >>