C111123313331323113313331333133313331323133113313331333131122112322331221   >>    C11112331333132311331333133313331333132313311331333133313112211232233122   <<    C111123313331323113313331333133313331323133113313331333131122112322331223   >>      C111123313331323113313331333133313331323133113313331333131122112322331222   >>