-al -ic a-a a-b a-c a-i aaa aab aac aae aai aak aal aap ab- aba abb abc abe abi abk abl abp ac- aca acb acc ace aci ack acl acp aea aeb aec aee aei aek ael aep ai- aia aib aic aie aii aik ail aip aka akb akc ake aki akk akl akp al- ala alb alc ale ali alk all alp ap- apa apb apc ape api apk apl app b-p baa bab bac bae bai bak bal bap bba bbb bbc bbe bbi bbk bbl bbp bca bcb bcc bce bci bck bcl bcp be- bea beb bec bee bei bek bel bep bi- bia bib bic bie bii bik bil bip bka bkb bkc bke bkk bkl bkp bla blb blc ble bli blk bll blp bpa bpb bpc bpe bpi bpl bpp c-- caa cab cac cae cai cak cal cap cba cbb cbc cbe cbi cbk cbl cbp cca ccb ccc cce cci cck ccl ccp ce- cea ceb cec cee cei cek cel cep ci- cia cib cic cie cii cik cil cip cka ckb ckc cki cl- cla clb clc cle cli clk cll clp cpa cpb cpc cpe cpi cpk cpl cpp eaa eab eac eae eai eak eal eap eba ebb ebc ebe ebi ebk ebl ebp ec- eca ecb ecc ece eci eck ecl eea eeb eec eee eek eel eep eia eib eic eie eii eik eil eip eka ekb ekc eke eki ekl ekp ela elb elc ele eli elk ell elp ep- epa epb epc epe epi epl epp ia- iaa iab iac iae iai ial iap iba ibb ibc ibe ibi ibk ibl ibp ica icb icc ice ici ick icl icp ie- iea iec iee iei iek iel iep iia iib iic iie iii iil iip ika ikb ikc ike iki ikk ikl il- ila ilb ilc ile ili ilk ill ilp ipa ipb ipc ipe ipi ipl ipp ka- kaa kab kac kae kai kak kal kap kba kbb kbc kbe kbi kbk kbl kbp kca kcb kcc kce kci kck kcl kcp ke- kea keb kec kee kei kek kel kep kia kib kic kie kii kik kil kip kkb kkc kke kki kkk kkl kkp kl- kla klb klc kli kpa kpc kpe kpi kpk kpl kpp l-p la- laa lab lac lae lai lak lal lap lba lbb lbc lbe lbi lbk lbl lbp lca lcb lcc lce lci lck lcl lcp lea leb lec lee lei lek lel lep lia lib lic lie lii lik lil lip lka lkb lkl lkp lla llb llc lle lli llk lll llp lpa lpb lpc lpe lpi lpk lpl lpp p-p paa pab pac pae pai pak pal pap pba pbb pbc pbe pbi pbk pbl pbp pca pcb pcc pce pci pck pcl pcp pea peb pec pee pei pek pel pep pia pib pic pie pii pik pil pip pka pkb pkc pke pki pkl pkp pla plb plc ple pli plk pll plp ppa ppb ppc ppe ppi ppk ppl ppp