C111123313331323113313331333133313331122112312111133133313112211231132321   >>    C11112331333132311331333133313331333112211231211113313331311221123113232   <<    C111123313331323113313331333133313331122112312111133133313112211231132323   >>      C111123313331323113313331333133313331122112312111133133313112211231132322   >>