PETROGENETIC

en er et go in it ne no oe oi on op or pe pi re ti to

cee cep cig cog con cop cor cot ego eng eon ere erg ern gee gen get gie gin gip git gor got ice ion ire nee neg net nip nit nog nor not one ope opt orc ore ort pec pee peg pen per pet pic pie pig pin pit poi pot pro rec ree reg rei rep ret rig rin rip roc roe rot tee teg ten tet tic tie tin tip tit toe tog ton top tor tot

cent cepe cere cero cete cine cion cire cite coin coir cone coni cope core corn cote crit crop eger epee epic ergo erne etic gene gent gien girn giro girt gite goer gone gore gorp gree grin grip grit grot icon inro into iron neep nett nice nite noir nope nori note ogee ogre once open otic peen peer pein pent peon pere peri pert pice pier pine ping pint pion pirn poet pone pong pore porn port pree prig prog rein rent repo rete rice ring riot ripe rite rope rote roti teen tent tern tier tine ting tint tire tiro toit tone tong tope topi torc tore tori torn tort tote tree tret trig trio trip trog trop trot