-al -ol a-a a-b a-i aaa aab aaf aai aal aao aas aau ab- aba abb abf abi abl abo abs abu af- afa afb aff afi afl afo afs afu ai- aia aib aif aii ail aio ais aiu al- ala alb alf ali all alo als alu aoa aob aof aoi aol aoo aos aou as- asa asb asf asi asl aso ass asu au- aua aub auf aui aul auo aus b-u baa bab baf bai bal bao bas bau bba bbb bbf bbi bbl bbo bbs bbu bfa bfb bff bfi bfl bfo bfs bfu bi- bia bib bif bii bil bio bis biu bla blb blf bli bll blo bls blu boa bob bof boi bol boo bos bou bsa bsb bsf bsi bsl bso bss bsu bua bub buf bui bul buo bus buu faa fab faf fai fal fao fas fau fba fbb fbf fbi fbl fbo fbs fbu ffa fff ffi ffl ffo ffs ffu fia fib fif fii fil fis fiu fla flb flf fli fll flo fls flu foa fob fof foi fol foo fos fou fsa fsb fsf fsi fsl fso fss fsu fua fub fuf fui ful fuo fus fuu i-f ia- iaa iab iaf iai ial iao ias iau iba ibb ibf ibi ibl ibo ibs ibu ifa ifb iff ifi ifl ifo ifs ifu iia iib iif iii iil iio iis iiu il- ila ilb ilf ili ill ilo ils ilu io- ioa iob iof ioi iol ioo ios iou is- isa isb isf isi isl iso iss isu iu- iua iub iui ius la- laa lab laf lai lal lao las lau lba lbb lbf lbi lbl lbo lbs lbu lfa lfb lff lfi lfl lfo lfs lfu lia lib lif lii lil lio lis liu lla llb llf lli lll llo lls llu loa lob lof loi lol loo los lou lsa lsb lsf lsi lsl lso lss lsu lua lub luf lui lul luo lus luu o-i oaa oab oaf oai oal oao oas oau ob- oba obb obf obi obl obo obs obu of- ofa ofb off ofi ofl ofo ofs ofu oia oib oif oii oil oio ois oiu ola olb olf oli oll olo ols olu oo- ooa oob oof ooi ool ooo oos os- osa osb osf osi osl oso oss osu ou- oua ouf oui oul ouo ous saa sab saf sai sal sao sas sau sba sbb sbf sbi sbl sbo sbs sbu sfa sfb sff sfi sfl sfo sfs sfu sia sib sif sii sil sio sis siu sla slb slf sli sll slo sls slu soa sob sof soi sol soo sos sou ss- ssa ssb ssf ssi ssl sso sss ssu sua sub suf sui sul suo sus suu ua- uaa uab uaf uai ual uao uas uau uba ubb ubf ubi ubl ubo ubs ubu ufa uff ufi ufl ufo ufs ufu uia uib uif uii uil uio uis uiu ula ulb ulf uli ull ulo uls ulu uoa uob uol uoo uos usa usb usf usi usl uso uss usu uua uus uuu