GROUPISTS

go is it oi op or os pi si so ti to up us ut

gip git gor gos got gut its ops opt ors ort our out pig pis pit piu poi pot pro psi pst pug pur pus put rig rip rot rug rut sip sir sis sit sop sos sot sou sri sup tip tis tog top tor tug tui tup upo ups urp uts

gips giro girt gist gits gorp gout grip grit grot gust guts opts opus orts ours oust outs pigs piso piss pits pois port post pots pour pout prig prog pros psis psst ptui pugs puri purs puss puts rigs riot rips roti rots roup rout rugs rust ruts sips sirs sits sops sori sort sots soup sour sous spit spot spur sris stir stop suit sups tips tiro togs topi tops tori tors toss tour trig trio trip trog trop trug tugs tuis tups urps