-al -er -ic a-a a-b a-c a-i aaa aab aac aad aae aai aak aal aar ab- aba abb abc abd abe abi abk abl abr ac- aca acb acc acd ace aci ack acl acr ad- ada adb adc add ade adi adk adl adr aea aeb aec aed aee aei aek ael aer ai- aia aib aic aid aie aii aik ail air aka akb akc akd ake aki akk akl akr al- ala alb alc ald ale ali alk all alr ar- ara arb arc ard are ari ark arl arr baa bab bac bad bae bai bak bal bar bba bbb bbc bbd bbe bbi bbk bbl bbr bca bcb bcc bcd bce bci bck bcl bcr bda bdb bdc bdd bde bdi bdk bdl bdr be- bea beb bec bed bee bei bek bel ber bi- bia bib bic bid bie bii bik bil bir bka bkb bkc bke bkk bkl bkr bla blb blc bld ble bli blk bll blr bra brb brd bre bri brk brl brr c-- caa cab cac cad cae cai cak cal car cba cbb cbc cbd cbe cbi cbk cbl cbr cca ccb ccc ccd cce cci cck ccl ccr cda cdb cdc cdd cde cdi cdk cdl cdr ce- cea ceb cec ced cee cei cek cel cer ci- cia cib cic cid cie cii cik cil cir cka ckb ckc ckd cki cl- cla clb clc cld cle cli clk cll clr cra crb crc crd cre cri crk crl crr daa dab dac dad dae dai dak dal dar dba dbb dbc dbd dbe dbi dbk dbl dbr dca dcb dcc dcd dce dci dck dcl dcr dda ddb ddc ddd dde ddi ddk ddl ddr de- dea deb dec ded dee dei dek del der di- dia dib dic did die dii dik dil dir dka dkb dkc dke dki dkk dkl dkr dl- dla dlb dlc dld dle dli dlk dll dlr dra drb drc drd dre dri drk drl drr eaa eab eac ead eae eai eak eal ear eba ebb ebc ebd ebe ebi ebk ebl ebr ec- eca ecb ecc ecd ece eci eck ecl ecr ed- eda edb edc edd ede edi edk edl edr eea eeb eec eed eee eek eel eer eia eib eic eid eie eii eik eil eir eka ekb ekc ekd eke eki ekl ekr ela elb elc eld ele eli elk ell elr era erb erc erd ere eri erk erl err i-d ia- iaa iab iac iad iae iai ial iar iba ibb ibc ibd ibe ibi ibk ibl ibr ica icb icc icd ice ici ick icl icr ida idb idc idd ide idi idk idl idr ie- iea iec ied iee iei iek iel ier iia iib iic iid iie iii iil iir ika ikb ikc ike iki ikk ikl ikr il- ila ilb ilc ild ile ili ilk ill ilr ir- ira irb irc ird ire iri irk irl irr ka- kaa kab kac kad kae kai kak kal kar kba kbb kbc kbd kbe kbi kbk kbl kbr kca kcb kcc kcd kce kci kck kcl kcr kda kdb kdc kde kdk kdl kdr ke- kea keb kec ked kee kei kek kel ker kia kib kic kid kie kii kik kil kir kkb kkc kke kki kkk kkl kkr kl- kla klb klc kld kli klr kra krc krd kri krk krl krr la- laa lab lac lad lae lai lak lal lar lba lbb lbc lbd lbe lbi lbk lbl lbr lca lcb lcc lcd lce lci lck lcl lcr lda ldb ldc ldd lde ldi ldk ldl ldr lea leb lec led lee lei lek lel ler lia lib lic lid lie lii lik lil lir lka lkb lkl lkr lla llb llc lld lle lli llk lll llr lra lrb lrc lrd lri lrk lrr ra- raa rab rac rad rae rai rak ral rar rba rbb rbc rbd rbe rbi rbk rbl rbr rca rcb rcc rcd rce rci rcl rcr rda rdb rdc rdd rde rdi rdl rdr re- rea reb rec red ree rei rek rel rer ria rib ric rid rie rii rik ril rir rkb rkc rke rkk rla rlc rld rle rli rll rlr rra rrb rrc rrd rri rrk rrl rrr

a-ak a-be a-ii aaaa aaab aaac aaad aaae aaai aaal aaar aaba aabb aabc aabd aabi aabl aaca aacb aacc aacd aace aaci aack aacl aacr aada aadc aade aadi aaea aaec aaib aaic aaii aaka aake aala aalc aald aale aali aall aara aarc aard aare aari abaa abab abac abad abae abai abak abal abar abb- abba abbb abbe abbi abbr abca abcb abcc abcd abci abcl abcr abda abdi abec abed abee abel aber abia abib abic abid abie abil abir abla able abra abrc abri acaa acab acac acad acae acai acar acba acbl acca accc accd acce acci acda acdb acdc acde acdi ace- acea acec aced acek acel acer aci- acia acic acid acie acir ackd acke acla aclc acle acli aclr acr- acra acrc acre acri acrr adaa adab adac adad adae adai adak adal adar adba adbc adbi adcc adci adda addc addd adde addi addl addr adea adeb adee adel ader adia adib adic adie adik adir adki adle adli adra adre aeac aebi aecb aeci aecl aede aeer aeka aela aelc aer- aera aerc aerd aeri aiai aiba aibl aica aicc aicd aice aicr aida aidb aidc aide aidi aidr aiea aiee aiel aiia aiib aiic aiid aiir aika aike aiki aila aild aile aili aira aird aire airi akaa akae akai akal akar akca aked akee akel aker akia akid akie akik akil akir akka akki akle akr- akra akre alaa alac alad alae alai alak alal alar alb- alba albc albe albi alca alcc alce ald- alda alde aldi aldl alea alec aled alee alek aler ali- alia alib alid alie alii alik alil