C11112331312111112111133133313331333132311211331323113313221311   >>    C1111233131211111211113313331333133313231121133132311331322131   <<    C11112331312111112111133133313331333132311211331323113313221313   >>      C11112331312111112111133133313331333132311211331323113313221312   >>