-al -er -ic a-a a-b a-c a-i aaa aab aac aae aag aai aak aal aar ab- aba abb abc abe abg abi abk abl abr ac- aca acb acc ace acg aci ack acl acr aea aeb aec aee aeg aei aek ael aer ag- aga agb agc age agg agi agk agl agr ai- aia aib aic aie aig aii aik ail air aka akb akc ake akg aki akk akl akr al- ala alb alc ale alg ali alk all alr ar- ara arb arc are arg ari ark arl arr baa bab bac bae bag bai bak bal bar bba bbb bbc bbe bbg bbi bbk bbl bbr bca bcb bcc bce bcg bci bck bcl bcr be- bea beb bec bee beg bei bek bel ber bga bgb bgc bge bgg bgi bgk bgl bgr bi- bia bib bic bie big bii bik bil bir bka bkb bkc bke bkg bkk bkl bkr bla blb blc ble blg bli blk bll blr bra brb bre brg bri brk brl brr c-- caa cab cac cae cag cai cak cal car cba cbb cbc cbe cbg cbi cbk cbl cbr cca ccb ccc cce ccg cci cck ccl ccr ce- cea ceb cec cee ceg cei cek cel cer cga cgb cgc cge cgg cgi cgl cgr ci- cia cib cic cie cig cii cik cil cir cka ckb ckc cki cl- cla clb clc cle clg cli clk cll clr cra crb crc cre crg cri crk crl crr eaa eab eac eae eag eai eak eal ear eba ebb ebc ebe ebg ebi ebk ebl ebr ec- eca ecb ecc ece ecg eci eck ecl ecr eea eeb eec eee eeg eek eel eer ega egb egc ege egg egi egl egr eia eib eic eie eig eii eik eil eir eka ekb ekc eke ekg eki ekl ekr ela elb elc ele elg eli elk ell elr era erb erc ere erg eri erk erl err gaa gab gac gae gag gai gak gal gar gba gbc gbe gbg gbi gbk gbl gbr gca gcb gcc gce gcg gci gck gcl gcr ge- gea geb gec gee geg gei gek gel ger gga ggb ggc ggg ggi ggr gia gib gic gie gig gii gik gil gir gka gkb gla glb glc gle glg gli glk gll glr gra grb grc gre grg gri grk grl grr ia- iaa iab iac iae iag iai ial iar iba ibb ibc ibe ibg ibi ibk ibl ibr ica icb icc ice icg ici ick icl icr ie- iea iec iee ieg iei iek iel ier iga igb igc ige igg igi igk igl igr iia iib iic iie iii iil iir ika ikb ikc ike iki ikk ikl ikr il- ila ilb ilc ile ilg ili ilk ill ilr ir- ira irb irc ire irg iri irk irl irr ka- kaa kab kac kae kag kai kak kal kar kba kbb kbc kbe kbi kbk kbl kbr kca kcb kcc kce kcg kci kck kcl kcr ke- kea keb kec kee keg kei kek kel ker kga kgb kgc kgi kgl kia kib kic kie kig kii kik kil kir kkb kkc kke kki kkk kkl kkr kl- kla klb klc klg kli klr kra krc krg kri krk krl krr la- laa lab lac lae lag lai lak lal lar lba lbb lbc lbe lbg lbi lbk lbl lbr lca lcb lcc lce lcg lci lck lcl lcr lea leb lec lee leg lei lek lel ler lga lgb lgc lge lgg lgi lgk lgl lgr lia lib lic lie lig lii lik lil lir lka lkb lkg lkl lkr lla llb llc lle llg lli llk lll llr lra lrb lrc lrg lri lrk lrr ra- raa rab rac rae rag rai rak ral rar rba rbb rbc rbe rbg rbi rbk rbl rbr rca rcb rcc rce rcg rci rcl rcr re- rea reb rec ree reg rei rek rel rer rga rgb rgc rge rgg rgi rgk rgr ria rib ric rie rig rii rik ril rir rkb rkc rke rkg rkk rla rlc rle rlg rli rll rlr rra rrb rrc rrg rri rrk rrl rrr

a-ak a-be a-ii aaaa aaab aaac aaae aaai aaal aaar aaba aabb aabc aabi aabl aaca aacb aacc aace aaci aack aacl aacr aaea aaec aage aaib aaic aaii aaka aake aala aalc aale aali aall aara aarc aare aari abaa abab abac abae abag abai abak abal abar abb- abba abbb abbe abbi abbr abca abcb abcc abci abcl abcr abec abee abel aber abgl abia abib abic abie abig abil abir abla able abra abrc abri acaa acab acac acae acag acai acar acba acbl acca accc acce acci ace- acea acec acek acel acer acga acgi acgr aci- acia acic acie acir acke acla aclc acle acli aclr acr- acra acrc acre acri acrr aeac aebi aecb aeci aecl aeer aega aeka aela aelc aer- aera aerc aeri agac agag agai agal agar agba agca agcc agce agea agee agei agel ager agga agge aggi agia agib agic agie agig agii agil agir agla aglc agle agli agra agre agri agrl aiai aiba aibl aica aicc aice aicr aiea aiee aiel aiga aiia aiib aiic aiir aika aike aiki aila aile aili aira aire airi akaa akae akai akal akar akca akee akeg akel aker akia akie akik akil akir akka akki akle akr- akra akre alaa alac alae alag alai alak alal alar alb- alba albc albe albi alca alcc alce alea alec alee aleg alek aler alg- alga alge algi ali- alia alib alie alig alii alik alil alir alk- alka alkb alke alki all- alla alle alli alll allr arab arac arae arag arai arak aral arar arba arbe arbi arc- arca arce arci area arec aree areg arei arek arel arga argb arge argi aria arib arie arig arii arik aril arka arke arki arla arle arli