C1111133313331323223313331333133313331323131211113313112333223331   >>    C111113331333132322331333133313331333132313121111331311233322333   <<    C1111133313331323223313331333133313331323131211113313112333223333   >>      C1111133313331323223313331333133313331323131211113313112333223332   >>