C1111133313331323223313331333133313331323131211113313112121111331311123121   >>    C111113331333132322331333133313331333132313121111331311212111133131112312   <<    C1111133313331323223313331333133313331323131211113313112121111331311123123   >>      C1111133313331323223313331333133313331323131211113313112121111331311123122   >>