C111123313121111121111331333133313331323221211113313233311232212111   >>    C11112331312111112111133133313331333132322121111331323331123221211   <<    C111123313121111121111331333133313331323221211113313233311232212113   >>      C111123313121111121111331333133313331323221211113313233311232212112   >>