C11112331312111112111133133313331333132313331122112323223313331323131211   >>    C1111233131211111211113313331333133313231333112211232322331333132313121   <<    C11112331312111112111133133313331333132313331122112323223313331323131213   >>      C11112331312111112111133133313331333132313331122112323223313331323131212   >>