C3132121111133313233121111331333133313331333133313331333133313311232211   >>    C313212111113331323312111133133313331333133313331333133313331331123221   <<    C3132121111133313233121111331333133313331333133313331333133313311232213   >>      C3132121111133313233121111331333133313331333133313331333133313311232212   >>