C111123313331323113313331333133313331122112312111133133313221323131122131   >>    C11112331333132311331333133313331333112211231211113313331322132313112213   <<    C111123313331323113313331333133313331122112312111133133313221323131122133   >>      C111123313331323113313331333133313331122112312111133133313221323131122132   >>