C111123313331323113313331333133313331122112312111133133313112122221   >>    C11112331333132311331333133313331333112211231211113313331311212222   <<    C111123313331323113313331333133313331122112312111133133313112122223   >>      C111123313331323113313331333133313331122112312111133133313112122222   >>