C111123313331323113313331333133313331122112312111133133313331333132331231   >>    C11112331333132311331333133313331333112211231211113313331333133313233123   <<    C111123313331323113313331333133313331122112312111133133313331333132331233   >>      C111123313331323113313331333133313331122112312111133133313331333132331232   >>