C1111133313331323223313331333133313311211111211331333131133133313231122211   >>    C111113331333132322331333133313331331121111121133133313113313331323112221   <<    C1111133313331323223313331333133313311211111211331333131133133313231122213   >>      C1111133313331323223313331333133313311211111211331333131133133313231122212   >>