idrc idre ieac iecc iedr ieie iepa iera iere ieri iiac iica iicd iida iide iied iiie iiii iipa iira iirc ipac ipad ipba ipca ipcc ipce ipdc ipdi ipea ipec iper ipid ipie ippa ippc ippr ipri irac irad irae irai irap irar irbe irbp irca ircc ircd irda irdc irdp ired iree irer iri- iria iric irid irie irip irpa irpc irpe irra irrc irre irri paap paar paba paca pacd pace paci pada padd pade padi paea paec paep paer paia paib paid paie paip pair papa papb pape papi papp papr par- para parc pard pare pari parp parr pbac pbar pbcc pbed pbpa pcaa pcad pcae pcap pcba pcbc pcca pccc pcce pcea pcep pcer pcia pcip pcpb pcpp pcra pcrc pcrd pcre pdac pdca pdci pdcp pdea pdic pdpa pdpr pdrc peab peac peai peap pear peba peca pece peci pecr ped- peda pede pedi peec peed peep peer peia peip peir pepa pepd pepe pepi per- pera perc perd pere peri perp perr piai pibb pibi pica picc pice pici picr pida pide piea pied piep pier piia piip pipa pipe pipi pipp pira pirc pire piri pirr ppac ppad ppap ppar ppcc ppcd ppci pper ppib ppic ppid ppie pppa pppd pppp pprc prad prae prai prar prbc prca prcc prcd prcp pre- preb prec pred pree prep pri- pria prid prie prii prpd prrd prri raab raad raba rabb rabe rabi rac- raca racc race raci rada radc radd rade radr raec raed raep raer raia raic raid raie raii raip rair rapa rapc rapd rape rapi rapp rara rarb rare rari rbbb rbbr rcac rcbc rccb rccc rcdc rcde rcep rcic rcid rcpd rcpi rcrd rdac rdap rdbp rder rdpc rea- reac read reae reap rear reba rebb rebe reca recc recd rece reci recp recr reda redc redd rede redi redr reeb reed reep reia reid reii reir repe repi repp repr rera rerd rere reri riaa riab riad riai rib- riba ribe rica ricc rice rida ridc ridd ride ridi ried riep rier riia ripa ripd ripe ripi ripp ripr rire riri rpca rpdp rpii rrad rred rrrr