C111123313331323113313331333133313331323131211113313331322331323132112323131   >>    C11112331333132311331333133313331333132313121111331333132233132313211232313   <<    C111123313331323113313331333133313331323131211113313331322331323132112323133   >>      C111123313331323113313331333133313331323131211113313331322331323132112323132   >>