PISTIOLOGY

go is it li lo oi op os oy pi si so ti to yo

gip git goo gos got goy gyp its lip lis lit log loo lop lot oil oot ops opt pig pis pit ply poi pol poo pot psi pst sip sit sly sol sop sot soy spy sty til tip tis tog too top toy yip

gilt gips gist gits glop goop goos goys gyps lips lisp list lits logo logs logy loop loos loot lops lost loti lots oils oily olio oops oots opts pigs pili pily piso pits pity plot ploy pogy pois polo pols poly pool poos post posy pots silo silt slip slit slog slop slot soil soli solo soot spit spot stop syli tils tipi tips togs toil tool topi topo tops toyo toys typo yips yogi