C1111133313331323223313331333133313311211111211331333131233133313231   >>    C111113331333132322331333133313331331121111121133133313123313331323   <<    C1111133313331323223313331333133313311211111211331333131233133313233   >>      C1111133313331323223313331333133313311211111211331333131233133313232   >>