-al -ol a-a a-b a-c aaa aab aac aae aah aal aao aau ab- aba abb abc abe abh abl abo abu ac- aca acb acc ace ach acl aco acu aea aeb aec aee aeh ael aeo aeu aha ahb ahc ahe ahh ahl aho ahu al- ala alb alc ale alh all alo alu aoa aob aoc aoe aoh aol aoo aou au- aua aub auc aue auh aul auo b-u baa bab bac bae bah bal bao bau bba bbb bbc bbe bbh bbl bbo bbu bca bcb bcc bce bch bcl bco bcu be- bea beb bec bee beh bel beo beu bha bhb bhc bhe bhh bhl bho bhu bla blb blc ble blh bll blo blu boa bob boc boe boh bol boo bou bua bub buc bue buh bul buo buu c-- caa cab cac cae cah cal cao cau cba cbb cbc cbe cbh cbl cbo cbu cca ccb ccc cce cch ccl cco ccu ce- cea ceb cec cee ceh cel ceo ceu ch- cha chb chc che chh chl cho chu cl- cla clb clc cle clh cll clo clu co- coa cob coc coe coh col coo cou cua cub cuc cue cuh cul cuo cuu eaa eab eac eae eah eal eao eau eba ebb ebc ebe ebh ebl ebo ebu ec- eca ecb ecc ece ech ecl eco ecu eea eeb eec eee eel eeo eha ehb ehc ehe ehh ehl eho ehu ela elb elc ele elh ell elo elu eo- eoa eob eoc eoe eoh eol eoo eou eu- eua eub euc eue eul haa hab hac hae hah hal hao hau hba hbb hbc hbe hbh hbl hbo hbu hca hcb hcc hce hch hcl hco he- hea heb hec hee heh hel heo heu hha hhb hhc hhe hhh hhl hho hhu hla hlb hlc hle hlh hll hlo hlu hoa hob hoc hoe hoh hol hoo hou hua hub huc hue huh hul huo huu la- laa lab lac lae lah lal lao lau lba lbb lbc lbe lbh lbl lbo lbu lca lcb lcc lce lch lcl lco lcu lea leb lec lee leh lel leo leu lha lhb lhc lhh lho lhu lla llb llc lle lll llo llu loa lob loc loe loh lol loo lou lua lub luc lue luh lul luo luu oaa oab oac oae oah oal oao oau ob- oba obb obc obe obh obl obo obu oc- oca ocb occ och ocl oco ocu oea oeb oec oee oeh oel oeo oha ohc ohe ohh ohl oho ohu ola olb olc ole oll olo olu oo- ooa oob ooc ooh ool ooo ou- oua ouc oue ouh oul ouo ua- uaa uab uac uae uah ual uao uau uba ubb ubc ube ubh ubl ubo ubu uca ucb ucc uce uch ucl uco ucu uea ueb uec uee ueh uel uha uhb uhc uhe uhh uhl uho uhu ula ulb ulc ule ull ulo ulu uoa uob uoc uoe uol uoo uua uuc uue uuu