C111123313331323113313331333133313331122112312111113231313233231   >>    C11112331333132311331333133313331333112211231211111323131323323   <<    C111123313331323113313331333133313331122112312111113231313233233   >>      C111123313331323113313331333133313331122112312111113231313233232   >>