C1111133313331323223313331333133313311211111211331333133313232132313112221211   >>    C111113331333132322331333133313331331121111121133133313331323213231311222121   <<    C1111133313331323223313331333133313311211111211331333133313232132313112221213   >>      C1111133313331323223313331333133313311211111211331333133313232132313112221212   >>