PREOBTAINABLE

aa ab ae ai al an ar at ba be bi bo el en er et in it la li lo na ne no oe oi on op or pa pe pi re ta ti to

aal aba abo ail ain air ait ala alb ale alp alt ana ane ani ant ape apo apt arb are art ate baa bal ban bap bar bat bee bel ben bet bib bin bio bit boa bob bop bot bra bro ear eat ebb eel eon era ere ern eta ion ire lab lap lar lat lea lee lei let lib lie lin lip lit lob lop lot nab nae nap neb nee net nib nil nip nit nob nor not oar oat oba obe obi oil ole one ope opt ora orb ore ort pal pan par pat pea pee pen per pet pia pie pin pit poi pol pot pro rai ran rap rat reb ree rei rep ret ria rib rin rip rob roe rot tab tae tan tao tap tar tea tee tel ten tie til tin tip toe ton top tor

abba abbe abet able abri aeon aero airn airt alae alan alar alba alee alit aloe alto anal anil anoa anta ante anti aper area aria aril atap atop baal baba babe bail bait bale bane bani barb bare barn bate bean bear beat been beep beer beet belt bene bent beta bier bile bine bint birl biro bite blab blae blat bleb blet blin blip blob blot boar boat boil bola bole bolt bone bora bore born bort bota brae bran brat bree bren brie brin brio brit earl earn ebon elan enol erne etna ilea inro into iota iron lain lair lane lari late lati lean leap lear leer leet leno lent lept liar lien lier line lino lint lion lipa lipe lira lire lite loan lobe loin lone lope lore lorn lota loti nabe nail nala naoi napa nape neap near neat neep nipa nite noel noil noir nope nori nota note obia obit olea opal open oral orle pail pain pair pale pane pant para pare part pate peal pean pear peat peel peen peer pein pele pelt pent peon pere peri pert pial pian pier pile pina pine pint pion pirn pita plan plat plea pleb plie plot poet pole pone pore porn port prao prat pree proa raia rail rain rale rani rant rape rapt rate rato real reap reel rein rent repo rete rial riel rile riot ripe rite roan robe roil role rope rota rote roti rotl tael tail tain tala tale tali tapa tape tare tarn taro tarp teal tear teel teen tela tele tepa tern tier tile tine tire tirl tiro toea toil tola tole tone tope topi tora tore tori torn trap tree trio trip trop