-al -ic a-a a-b a-c a-i aaa aab aac aaf aai aak aal aap ab- aba abb abc abf abi abk abl abp ac- aca acb acc acf aci ack acl acp af- afa afb afc aff afi afk afl afp ai- aia aib aic aif aii aik ail aip aka akb akc aki akk akl akp al- ala alb alc alf ali alk all alp ap- apa apb apc apf api apk apl app b-p baa bab bac baf bai bak bal bap bba bbb bbc bbf bbi bbk bbl bbp bca bcb bcc bcf bci bck bcl bcp bfa bfb bfc bff bfi bfl bfp bi- bia bib bic bif bii bik bil bip bka bkb bkc bkf bkk bkl bkp bla blb blc blf bli blk bll blp bpa bpb bpc bpf bpi bpl bpp c-- caa cab cac caf cai cak cal cap cba cbb cbc cbf cbi cbk cbl cbp cca ccb ccc ccf cci cck ccl ccp cfa cfb cfc cff cfi cfk cfl cfp ci- cia cib cic cif cii cik cil cip cka ckb ckc cki cl- cla clb clc clf cli clk cll clp cpa cpb cpc cpf cpi cpk cpl cpp faa fab fac faf fai fak fal fap fba fbb fbc fbf fbi fbk fbl fbp fca fcb fcc fcf fci fck fcl fcp ffa ffc fff ffi ffk ffl ffp fia fib fic fif fii fik fil fip fka fkb fkc fkf fki fkk fkl fkp fla flb flc flf fli fll flp fpa fpb fpc fpi fpk fpl fpp i-f ia- iaa iab iac iaf iai ial iap iba ibb ibc ibf ibi ibk ibl ibp ica icb icc icf ici ick icl icp ifa ifb ifc iff ifi ifl ifp iia iib iic iif iii iil iip ika ikb ikc ikf iki ikk ikl il- ila ilb ilc ilf ili ilk ill ilp ipa ipb ipc ipf ipi ipl ipp ka- kaa kab kac kaf kai kak kal kap kba kbb kbc kbf kbi kbk kbl kbp kca kcb kcc kci kck kcl kcp kfa kfc kff kfi kia kib kic kif kii kik kil kip kkb kkc kki kkk kkl kkp kl- kla klb klc klf kli kpa kpc kpf kpi kpk kpl kpp l-p la- laa lab lac laf lai lak lal lap lba lbb lbc lbf lbi lbk lbl lbp lca lcb lcc lcf lci lck lcl lcp lfa lfb lfc lff lfi lfk lfl lfp lia lib lic lif lii lik lil lip lka lkb lkl lkp lla llb llc llf lli llk lll llp lpa lpb lpc lpf lpi lpk lpl lpp p-p paa pab pac paf pai pak pal pap pba pbb pbc pbf pbi pbk pbl pbp pca pcb pcc pcf pci pck pcl pcp pfa pfb pfc pff pfi pfk pfl pfp pia pib pic pif pii pik pil pip pka pkb pkc pkf pki pkl pkp pla plb plc plf pli plk pll plp ppa ppb ppc ppf ppi ppk ppl ppp