C3132121111133313233121111331333133313331333133313331333133311222123231   >>    C313212111113331323312111133133313331333133313331333133313331122212323   <<    C3132121111133313233121111331333133313331333133313331333133311222123233   >>      C3132121111133313233121111331333133313331333133313331333133311222123232   >>