PYROLIGNOUS

go in is li lo no nu oi on op or os oy pi si so un up us yo

gin gip gnu goo gor gos goy gul gun guy gyp ins ion lin lip lis log loo lop lug nil nip nog noo nor nos nus oil ono ons ops ors our pig pin pis piu ply poi pol poo pro pry psi pug pul pun pur pus rig rin rip rug run sin sip sir sly sol son sop sou soy spy sri sun sup syn uns upo ups urn urp yin yip yon you yup

gins gips girl girn giro glop gnus goon goop goos gorp gory goys grin grip gulp guls guns guys gyps gyri gyro iglu inly inro ions iron ling lino lins liny lion lips lisp logo logs logy loin long loon loop loos lops lorn lory loup lour lugs lung luny nils nips nogs noil noir nolo nori nosy nous nurl oils oily olio only onos onus oops opus orgy ours pigs pily ping pins piny pion pirn piso ploy plug plus pogy pois polo pols poly pong pons pony pool poon poor poos porn posy pour prig prog pros pugs puli puls pung puns puny puri purl purs pyin pyro rigs ring rins rips roil ropy rosy roup rugs ruin ruly rung runs sign silo sing slip slog slop slug slur snip snog snug soil soli solo song soon sori sorn soul soup sour spin spry spun spur sung syli ugly upon urns urps yins yips yogi yoni your yous yups