-er -ic a-a a-b a-c a-i aaa aab aac aad aae aai aak aar ab- aba abb abc abd abe abi abk abr ac- aca acb acc acd ace aci ack acr ad- ada adb adc add ade adi adk adr aea aeb aec aed aee aei aek aer ai- aia aib aic aid aie aii aik air aka akb akc akd ake aki akk akr ar- ara arb arc ard are ari ark arr baa bab bac bad bae bai bak bar bba bbb bbc bbd bbe bbi bbk bbr bca bcb bcc bcd bce bci bck bcr bda bdb bdc bdd bde bdi bdk bdr be- bea beb bec bed bee bei bek ber bi- bia bib bic bid bie bii bik bir bka bkb bkc bke bkk bkr bra brb brd bre bri brk brr c-- caa cab cac cad cae cai cak car cba cbb cbc cbd cbe cbi cbk cbr cca ccb ccc ccd cce cci cck ccr cda cdb cdc cdd cde cdi cdk cdr ce- cea ceb cec ced cee cei cek cer ci- cia cib cic cid cie cii cik cir cka ckb ckc ckd cki cra crb crc crd cre cri crk crr daa dab dac dad dae dai dak dar dba dbb dbc dbd dbe dbi dbk dbr dca dcb dcc dcd dce dci dck dcr dda ddb ddc ddd dde ddi ddk ddr de- dea deb dec ded dee dei dek der di- dia dib dic did die dii dik dir dka dkb dkc dke dki dkk dkr dra drb drc drd dre dri drk drr eaa eab eac ead eae eai eak ear eba ebb ebc ebd ebe ebi ebk ebr ec- eca ecb ecc ecd ece eci eck ecr ed- eda edb edc edd ede edi edk edr eea eeb eec eed eee eek eer eia eib eic eid eie eii eik eir eka ekb ekc ekd eke eki ekr era erb erc erd ere eri erk err i-d ia- iaa iab iac iad iae iai iar iba ibb ibc ibd ibe ibi ibk ibr ica icb icc icd ice ici ick icr ida idb idc idd ide idi idk idr ie- iea iec ied iee iei iek ier iia iib iic iid iie iii iir ika ikb ikc ike iki ikk ikr ir- ira irb irc ird ire iri irk irr ka- kaa kab kac kad kae kai kak kar kba kbb kbc kbd kbe kbi kbk kbr kca kcb kcc kcd kce kci kck kcr kda kdb kdc kde kdk kdr ke- kea keb kec ked kee kei kek ker kia kib kic kid kie kii kik kir kkb kkc kke kki kkk kkr kra krc krd kri krk krr ra- raa rab rac rad rae rai rak rar rba rbb rbc rbd rbe rbi rbk rbr rca rcb rcc rcd rce rci rcr rda rdb rdc rdd rde rdi rdr re- rea reb rec red ree rei rek rer ria rib ric rid rie rii rik rir rkb rkc rke rkk rra rrb rrc rrd rri rrk rrr

a-ak a-be a-ii aaaa aaab aaac aaad aaae aaai aaar aaba aabb aabc aabd aabi aaca aacb aacc aacd aace aaci aack aacr aada aadc aade aadi aaea aaec aaib aaic aaii aaka aake aara aarc aard aare aari abaa abab abac abad abae abai abak abar abb- abba abbb abbe abbi abbr abca abcb abcc abcd abci abcr abda abdi abec abed abee aber abia abib abic abid abie abir abra abrc abri acaa acab acac acad acae acai acar acba acca accc accd acce acci acda acdb acdc acde acdi ace- acea acec aced acek acer aci- acia acic acid acie acir ackd acke acr- acra acrc acre acri acrr adaa adab adac adad adae adai adak adar adba adbc adbi adcc adci adda addc addd adde addi addr adea adeb adee ader adia adib adic adie adik adir adki adra adre aeac aebi aecb aeci aede aeer aeka aer- aera aerc aerd aeri aiai aiba aica aicc aicd aice aicr aida aidb aidc aide aidi aidr aiea aiee aiia aiib aiic aiid aiir aika aike aiki aira aird aire airi akaa akae akai akar akca aked akee aker akia akid akie akik akir akka akki akr- akra akre arab arac arad arae arai arak arar arba arbe arbi arc- arca arce arci arda ardc arde ardi area arec ared aree arei arek aria arib arid arie arii arik arka arke arki arr- arra arrc arre arri arrk arrr ba-i baaa baad baak baar baba babb babe babi babr bac- baca bacc bace baci back bada badb badd bade badi badr baed baek baer baia baib baic baid baie baik bair bak- baka bake baki bakr bar- bara barb barc bard bare bari bark barr bbad bbbb bbci bbdd bbeb bbrc bcaa bcar bcbc bcca bccc bcci bcda bcde bcec bcer bcia bcie bcra bd-r bdbc bddc bdii bead beak bear beba bebb bebe bebi beca beci beck beda bede bedi beeb beed beek beer beia beic beik beir beka beke beki bera berc berd bere beri berk berr biad biak biar biba bibb bibe bibi bica bicc bice bici bick bida bide bidi bidr bieb bied bier bike bira birb bird bire biri birk birr brab brac brad brae brai brak brca brcb brce brda brea breb brec bred bree brei brek brer bria bric brid brie brik brka brkb brrr c-cd caaa caab caac caba cabe cabi cac- caca cacc cace caci cack cacr cada cadc cadd cade cadi cadr caec caei caer caia caib caic caid caik cair caka cake cara carb carc card care cari cark carr cbac cbar cbbc cbca cbcc cbce cbcr cbdb cbdc cbdi cbea cbec cbee cber cbia cbid cbir cbka cbkr cbrd cbre ccaa ccab ccac ccad ccai ccar ccba ccbc ccca cccb cccc ccci ccdc ccdi ccdr cced ccee ccic ccid ccii ccir ccra ccrc ccre ccri cd-e cd-r cdaa cdac cdad cdai cdba