UNPARASITIC

aa ai an ar as at in is it na nu pa pi si ta ti un up us ut

aas act ain air ais ait ana ani ant apt arc ars art asp can cap car cat cis cru cup cur cut ins its nap nip nit nus nut pac pan par pas pat pia pic pin pis pit piu psi pst pun pur pus put rai ran rap ras rat ria rin rip run rut sac sap sat sau sic sin sip sir sit spa sri sun sup tan tap tar tas tau tic tin tip tis tui tun tup uns ups urn urp uta uts

acta acts ains airn airs airt aits anas anis ansa anta anti ants anus arcs aria arts asci atap aunt aura cain cans cant caps carn carp cars cart casa cast cats cist crap cris crit crus cunt cups curn curs curt cusp cuts inia inti iris napa naps narc nipa nips nisi nits nuts paca pacs pact pain pair pans pant para pars part past pats pian pias pica pics pina pins pint pirn pita pits prat prau ptui puna puns punt puri purs puts raia rain rais rani rant raps rapt rasp rats rias rins rips ruin runs runt rust ruts sain sari sati scan scar scat scup scut snap snip snit span spar spat spic spin spit spun spur star stir stun suit sura tain tans tapa taps tarn tarp tars taus tics tins tipi tips trap trip tsar tuis tuna tuns tups turn unai unci unit upas uric urns urps ursa utas