SPONGIFORM

go if in is mi mo no of oi om on op or os pi si so

fig fin fir fog fon fop for fro gin gip goo gor gos ifs imp ins ion ism mig mir mis mog mon moo mop mor mos nim nip nog nom noo nor nos oms ono ons ops ors pig pin pis poi pom poo pro psi rif rig rim rin rip rom sim sin sip sir som son sop sri

figs fino fins firm firn firs fogs foin fons fops form frig frog from gimp gins gips girn giro goof goon goop goos gorm gorp grim grin grip imps info inro ions iron migs mips mirs miso mogs mono mons moon moor moos mops morn mors nims nips nogs noir noms nori norm onos oops pigs ping pins pion pirn piso pois pomo poms pong pons poof poon poor poos porn prig prim prof prog prom pros rifs rigs rims ring rins rips romp roms roof room sign simp sing smog snip snog song soon sori sorn spin