C1111133313331323223313331333133313331323131211111121133231333121   >>    C111113331333132322331333133313331333132313121111112113323133312   <<    C1111133313331323223313331333133313331323131211111121133231333123   >>      C1111133313331323223313331333133313331323131211111121133231333122   >>