C11112331312111112111133133313331333132311211332123313331323132321111   >>    C1111233131211111211113313331333133313231121133212331333132313232111   <<    C11112331312111112111133133313331333132311211332123313331323132321113   >>      C11112331312111112111133133313331333132311211332123313331323132321112   >>