-al -er -ic a-a a-b a-c a-i aaa aab aac aae aai aak aal aap aar ab- aba abb abc abe abi abk abl abp abr ac- aca acb acc ace aci ack acl acp acr aea aeb aec aee aei aek ael aep aer ai- aia aib aic aie aii aik ail aip air aka akb akc ake aki akk akl akp akr al- ala alb alc ale ali alk all alp alr ap- apa apb apc ape api apk apl app apr ar- ara arb arc are ari ark arl arp arr b-p baa bab bac bae bai bak bal bap bar bba bbb bbc bbe bbi bbk bbl bbp bbr bca bcb bcc bce bci bck bcl bcp bcr be- bea beb bec bee bei bek bel bep ber bi- bia bib bic bie bii bik bil bip bir bka bkb bkc bke bkk bkl bkp bkr bla blb blc ble bli blk bll blp blr bpa bpb bpc bpe bpi bpl bpp bpr bra brb bre bri brk brl brp brr c-- caa cab cac cae cai cak cal cap car cba cbb cbc cbe cbi cbk cbl cbp cbr cca ccb ccc cce cci cck ccl ccp ccr ce- cea ceb cec cee cei cek cel cep cer ci- cia cib cic cie cii cik cil cip cir cka ckb ckc cki cl- cla clb clc cle cli clk cll clp clr cpa cpb cpc cpe cpi cpk cpl cpp cpr cra crb crc cre cri crk crl crp crr eaa eab eac eae eai eak eal eap ear eba ebb ebc ebe ebi ebk ebl ebp ebr ec- eca ecb ecc ece eci eck ecl ecr eea eeb eec eee eek eel eep eer eia eib eic eie eii eik eil eip eir eka ekb ekc eke eki ekl ekp ekr ela elb elc ele eli elk ell elp elr ep- epa epb epc epe epi epl epp epr era erb erc ere eri erk erl erp err ia- iaa iab iac iae iai ial iap iar iba ibb ibc ibe ibi ibk ibl ibp ibr ica icb icc ice ici ick icl icp icr ie- iea iec iee iei iek iel iep ier iia iib iic iie iii iil iip iir ika ikb ikc ike iki ikk ikl ikr il- ila ilb ilc ile ili ilk ill ilp ilr ipa ipb ipc ipe ipi ipl ipp ipr ir- ira irb irc ire iri irk irl irp irr ka- kaa kab kac kae kai kak kal kap kar kba kbb kbc kbe kbi kbk kbl kbp kbr kca kcb kcc kce kci kck kcl kcp kcr ke- kea keb kec kee kei kek kel kep ker kia kib kic kie kii kik kil kip kir kkb kkc kke kki kkk kkl kkp kkr kl- kla klb klc kli klr kpa kpc kpe kpi kpk kpl kpp kpr kra krc kri krk krl krp krr l-p la- laa lab lac lae lai lak lal lap lar lba lbb lbc lbe lbi lbk lbl lbp lbr lca lcb lcc lce lci lck lcl lcp lcr lea leb lec lee lei lek lel lep ler lia lib lic lie lii lik lil lip lir lka lkb lkl lkp lkr lla llb llc lle lli llk lll llp llr lpa lpb lpc lpe lpi lpk lpl lpp lpr lra lrb lrc lri lrk lrp lrr p-p paa pab pac pae pai pak pal pap par pba pbb pbc pbe pbi pbk pbl pbp pbr pca pcb pcc pce pci pck pcl pcp pcr pea peb pec pee pei pek pel pep per pia pib pic pie pii pik pil pip pir pka pkb pkc pke pki pkl pkp pkr pla plb plc ple pli plk pll plp plr ppa ppb ppc ppe ppi ppk ppl ppp ppr pra prb prc pre pri prk prl prp prr ra- raa rab rac rae rai rak ral rap rar rba rbb rbc rbe rbi rbk rbl rbp rbr rca rcb rcc rce rci rcl rcp rcr re- rea reb rec ree rei rek rel rep rer ria rib ric rie rii rik ril rip rir rkb rkc rke rkk rkp rla rlc rle rli rll rlp rlr rpa rpb rpc rpe rpi rpk rpl rpp rpr rra rrb rrc rri rrk rrl rrp rrr