C111123313331323113313331333133313331122112312111133133313331333133322132313231   >>    C11112331333132311331333133313331333112211231211113313331333133313332213231323   <<    C111123313331323113313331333133313331122112312111133133313331333133322132313233   >>      C111123313331323113313331333133313331122112312111133133313331333133322132313232   >>