BIPARASITIC

aa ab ai ar as at ba bi is it pa pi si ta ti

aas aba abs act air ais ait apt arb arc ars art asp baa bap bar bas bat bis bit bra cab cap car cat cis its pac par pas pat pia pic pis pit psi pst rai rap ras rat ria rib rip sab sac sap sat sib sic sip sir sit spa sri tab tap tar tas tic tip tis

abas abri acta acts airs airt aits arbs arcs aria arts asci atap baas bait baps bars bast bats bias bits bras brat bris brit cabs caps carb carp cars cart casa cast cats cist crab crap crib cris crit ibis iris isba paca pacs pact pair para pars part past pats pias pica pics pita pits prat raia rais raps rapt rasp rats rias ribs rips sari sati scab scar scat spar spat spic spit stab star stir tabs tapa taps tarp tars tics tipi tips trap trip tsar