C11112331312111112111133133313331323132313232233133313133123231   >>    C1111233131211111211113313331333132313231323223313331313312323   <<    C11112331312111112111133133313331323132313232233133313133123233   >>      C11112331312111112111133133313331323132313232233133313133123232   >>