-er -ic a-a a-b a-c a-i aaa aab aac aae aai aao aap aar ab- aba abb abc abe abi abo abp abr ac- aca acb acc ace aci aco acp acr aea aeb aec aee aei aeo aep aer ai- aia aib aic aie aii aio aip air aoa aob aoc aoe aoi aoo aop aor ap- apa apb apc ape api apo app apr ar- ara arb arc are ari aro arp arr b-p baa bab bac bae bai bao bap bar bba bbb bbc bbe bbi bbo bbp bbr bca bcb bcc bce bci bco bcp bcr be- bea beb bec bee bei beo bep ber bi- bia bib bic bie bii bio bip bir boa bob boc boe boi boo bop bor bpa bpb bpc bpe bpi bpo bpp bpr bra brb bre bri bro brp brr c-- caa cab cac cae cai cao cap car cba cbb cbc cbe cbi cbo cbp cbr cca ccb ccc cce cci cco ccp ccr ce- cea ceb cec cee cei ceo cep cer ci- cia cib cic cie cii cio cip cir co- coa cob coc coe coi coo cop cor cpa cpb cpc cpe cpi cpo cpp cpr cra crb crc cre cri cro crp crr eaa eab eac eae eai eao eap ear eba ebb ebc ebe ebi ebo ebp ebr ec- eca ecb ecc ece eci eco ecr eea eeb eec eee eeo eep eer eia eib eic eie eii eio eip eir eo- eoa eob eoc eoe eoi eoo eop eor ep- epa epb epc epe epi epo epp epr era erb erc ere eri ero erp err ia- iaa iab iac iae iai iao iap iar iba ibb ibc ibe ibi ibo ibp ibr ica icb icc ice ici ico icp icr ie- iea iec iee iei iep ier iia iib iic iie iii iio iip iir io- ioa iob ioc ioe ioi ioo iop ior ipa ipb ipc ipe ipi ipo ipp ipr ir- ira irb irc ire iri iro irp irr o-i oaa oab oac oae oai oao oap oar ob- oba obb obc obe obi obo obp obr oc- oca ocb occ oci oco ocp ocr oea oeb oec oee oei oeo oep oer oia oib oic oie oii oio oip oir oo- ooa oob ooc ooi ooo oop oor op- opa opb opc ope opi opo opp opr or- ora orb orc ore ori oro orp orr p-p paa pab pac pae pai pao pap par pba pbb pbc pbe pbi pbo pbp pbr pca pcb pcc pce pci pco pcp pcr pea peb pec pee pei peo pep per pia pib pic pie pii pio pip pir poa pob poc poe poi poo pop por ppa ppb ppc ppe ppi ppo ppp ppr pra prb prc pre pri pro prp prr ra- raa rab rac rae rai rao rap rar rba rbb rbc rbe rbi rbo rbp rbr rca rcb rcc rce rci rco rcp rcr re- rea reb rec ree rei reo rep rer ria rib ric rie rii rio rip rir roa rob roc roe roi roo rop ror rpa rpb rpc rpe rpi rpo rpp rpr rra rrb rrc rri rrp rrr

a-be a-ii aaaa aaab aaac aaae aaai aaap aaar aaba aabb aabc aabi aabp aaca aacb aacc aace aaci aaco aacp aacr aaea aaec aaep aaib aaic aaii aaoe aaoo aapa aapc aapi aapo aara aarc aare aari aaro aarp abaa abab abac abae abai abap abar abb- abba abbb abbe abbi abbo abbr abca abcb abcc abci abcp abcr abec abee aber abia abib abic abie abir aboa abob aboo abor abpa abpc abpi abpp abpr abra abrc abri abro acaa acab acac acae acai acap acar acba acca accc acce acci acco accp ace- acea acec acer aci- acia acic acie acip acir acoa acoe acop acor acpa acpe acpi acpr acr- acra acrc acre acri acro acrr aeac aeap aebi aecb aeci aeer aeio aer- aera aerc aeri aero aiai aiba aibo aica aicc aice aicp aicr aiea aiee aiia aiib aiic aiir aioc aioi aipa aipe aipi aira aire airi airo airp aoba aoca aoce aopo aora aorb apac apai apao apap apar apba apbr apca apcb apcc apco apcr apea apec apep aper api- apia apic apie apio apip apo- apoc apoe apoo apop apor appa appc appr apra aprc apre apri apro arab arac arae arai arap arar arba arbe arbi arc- arca arce arci arco area arec aree arei areo arep aria arib arie arii ario arip aroa arob aroe aroi aroo aror arpa arpe arpi arr- arra arrc arre arri arro arrr ba-i baaa baar baba babb babe babi babo babr bac- baca bacc bace baci baco baer baia baib baic baie baio bair bapa bapc bape bapi bapp bar- bara barb barc bare bari baro barr bbbb bbci bbeb bbpr bbrc bcaa bcap bcar bcbc bcbp bcca bccc bcci bcec bcer bcia bcie bcor bcpp bcra beap bear beba bebb bebe bebi bebo beca beci beeb beep beer beia beic beir beo- beor bepo bera berc bere beri bero berr biao biap biar biba bibb bibe bibi bibo bica bicc bice bici bico bieb bier bio- bioc bioi bipa bipp bira birb bire biri biro birr boab boac boai boar boba bobb bobe bobi bobo boca boce boco boea boec boee boeo boep boer boi- boie boii boob booc booe boop boor bopa bope bopp bor- bora bore bori boro borr bpai bpcp bpea bpoe bprc brab brac brae brai brao brca brcb brce brea breb brec bree brei breo brep brer bria bric brie brio broa brob broc broe broo bror brrr c-bo caaa caab caac caap caba cabe cabi cabo cac- caca cacc cace caci caco cacr caec caei caer caia caib caic caio caip cair caoi caor capa capb capc cape capi capo capp cara carb carc care cari caro carp carr cbac cbar cbbc cbca cbcc cbce cbcp cbcr cbea