C1111121111331311211331333133313331333131211113313221211113313232321311   >>    C111112111133131121133133313331333133313121111331322121111331323232131   <<    C1111121111331311211331333133313331333131211113313221211113313232321313   >>      C1111121111331311211331333133313331333131211113313221211113313232321312   >>