Letters that make reentering polygon
o, e, g, l, n, p, r, t, i, y are letters that make 'reentering polygon'
Words within reentering polygon
ER, entering, re, te, NT, PO, pol, en, ng, polygon, RI, EE, go, on, in, ring, Erin, IN, Po, Re, Er, In, Te, enter are words within 'reentering polygon'