Letters that make passerine
s, a, e, n, p, r, i are letters that make 'passerine'
Words within passerine
ER, PA, passer, Pa, SE, SSE, RI, SS, passe, as, in, pass, pas, ass, serin, Passer, Erin, AS, IN, NE, pa, As, Er, In, Ne, Se, serine are words within 'passerine'