Letters that make close-grained
s, a, o, d, e, g, l, n, c, r, i are letters that make 'close-grained'
Words within close-grained
grain, os, OS, rain, cl, SE, ED, close, ain, in, AI, ai, RA, IN, NE, Ra, Cl, In, Ne, Os, Se, lose are words within 'close-grained'