-al a-a a-b a-c a-t aaa aab aac aaf aak aal aas aat aau ab- aba abb abc abf abk abl abs abt abu ac- aca acb acc acf ack acl acs act acu af- afa afb afc aff afk afl afs aft afu aka akb akc akk akl aks aku al- ala alb alc alf alk all als alt alu as- asa asb asc asf ask asl ass ast asu at- ata atb atc atf atl ats att atu au- aua aub auc auf auk aul aus aut b-u baa bab bac baf bak bal bas bat bau bba bbb bbc bbf bbk bbl bbs bbt bbu bca bcb bcc bcf bck bcl bcs bct bcu bfa bfb bfc bff bfl bfs bft bfu bka bkb bkc bkf bkk bkl bks bkt bla blb blc blf blk bll bls blt blu bsa bsb bsc bsf bsk bsl bss bst bsu bta btb btc btf btk btl bts btt btu bua bub buc buf buk bul bus but buu c-- caa cab cac caf cak cal cas cat cau cba cbb cbc cbf cbk cbl cbs cbt cbu cca ccb ccc ccf cck ccl ccs cct ccu cfa cfb cfc cff cfk cfl cfs cft cfu cka ckb ckc cks ckt cl- cla clb clc clf clk cll cls clt clu csa csb csc csf csk csl css cst csu cta ctb ctc ctf ctk ctl cts ctt ctu cua cub cuc cuf cuk cul cus cut cuu faa fab fac faf fak fal fas fat fau fba fbb fbc fbf fbk fbl fbs fbt fbu fca fcb fcc fcf fck fcl fcs fct fcu ffa ffc fff ffk ffl ffs fft ffu fka fkb fkc fkf fkk fkl fkt fla flb flc flf fll fls flt flu fsa fsb fsc fsf fsk fsl fss fst fsu fta ftb ftc ftf ftk ftl fts ftt ftu fua fub fuf fuk ful fus fut fuu k-t ka- kaa kab kac kaf kak kal kas kat kau kba kbb kbc kbf kbk kbl kbs kbu kca kcb kcc kck kcl kcs kct kcu kfa kfc kff kfs kfu kkb kkc kkk kkl kks kkt kku kl- kla klb klc klf kls klt klu ksa ksb ksc ksf ksk ksl kss kst ksu kta ktb ktc ktf ktk ktl kts ktt ktu kub kuc kuk kul kus kut kuu la- laa lab lac laf lak lal las lat lau lba lbb lbc lbf lbk lbl lbs lbt lbu lca lcb lcc lcf lck lcl lcs lct lcu lfa lfb lfc lff lfk lfl lfs lft lfu lka lkb lkl lks lkt lla llb llc llf llk lll lls llt llu lsa lsb lsc lsf lsk lsl lss lst lsu lta ltb ltc ltf ltk ltl lts ltt ltu lua lub luc luf luk lul lus lut luu saa sab sac saf sak sal sas sat sau sba sbb sbc sbf sbk sbl sbs sbt sbu sca scb scc scf sck scl scs sct scu sfa sfb sfc sff sfk sfl sfs sft sfu sk- ska skb skc skf skk skl sks skt sku sla slb slc slf slk sll sls slt slu ss- ssa ssb ssc ssf ssk ssl sss sst ssu sta stb stc stf stk stl sts stt stu sua sub suc suf suk sul sus sut suu taa tab tac taf tak tal tas tat tau tba tbb tbc tbf tbk tbl tbs tbt tbu tca tcb tcc tcf tck tcl tcs tct tcu tfa tfb tfc tff tfk tfl tfs tft tfu tka tkb tkc tkk tkl tks tkt tla tlc tlf tlk tll tls tlt tlu tsa tsb tsc tsf tsk tsl tss tst tsu tta ttb ttc ttf ttk ttl tts ttt ttu tua tub tuc tuf tuk tul tus tut tuu ua- uaa uab uac uaf uak ual uas uat uau uba ubb ubc ubf ubk ubl ubs ubt ubu uca ucb ucc ucf uck ucl ucs uct ucu ufa ufc uff ufl ufs uft ufu uka ukb ukc ukf ukk ukl uku ula ulb ulc ulf ulk ull uls ult ulu usa usb usc usf usk usl uss ust usu uta utb utc utf utk utl uts utt utu uua uuc uus uut uuu