C11111333133313232233133313331333133313233213331323133313221211113311211   >>    C1111133313331323223313331333133313331323321333132313331322121111331121   <<    C11111333133313232233133313331333133313233213331323133313221211113311213   >>      C11111333133313232233133313331333133313233213331323133313221211113311212   >>