PROTISTON

in is it no oi on op or os pi si so ti to

ins ion its nip nit noo nor nos not ono ons oot ops opt ors ort pin pis pit poi poo pot pro psi pst rin rip rot sin sip sir sit son sop sot sri tin tip tis tit ton too top tor tot

inro into ions iron nips nits noir nori onos onto oops oots opts orts otto pins pint pion pirn piso pits pois pons poon poor poos porn port post pots pros rins riot rips root roti roto rots snip snit snot soon soot sori sorn sort spin spit spot stir stop stot tins tint tips tiro tits toit tons toon toot topi topo tops tori torn toro tors tort tost tots trio trip trop trot