C111123313331323113313331333133313331122112312111133132312312331   >>    C11112331333132311331333133313331333112211231211113313231231233   <<    C111123313331323113313331333133313331122112312111133132312312333   >>      C111123313331323113313331333133313331122112312111133132312312332   >>