C111123313331323113313331333133313331323133113313331333131211331211   >>    C11112331333132311331333133313331333132313311331333133313121133121   <<    C111123313331323113313331333133313331323133113313331333131211331213   >>      C111123313331323113313331333133313331323133113313331333131211331212   >>