C111123313331323113313331333133313331323133113313331323231311211   >>    C11112331333132311331333133313331333132313311331333132323131121   <<    C111123313331323113313331333133313331323133113313331323231311213   >>      C111123313331323113313331333133313331323133113313331323231311212   >>