C1111233131211111211113313331333133313232313331333131221133132321   >>    C111123313121111121111331333133313331323231333133313122113313232   <<    C1111233131211111211113313331333133313232313331333131221133132323   >>      C1111233131211111211113313331333133313232313331333131221133132322   >>