fff ffk ffm ffn ffo ffs fft ffu fkf fkk fkm fkt fmf fmm fmn fmo fms fmt fmu fnf fnk fnm fnn fns fnt fnu fof fok fom fon foo fos fot fou fsf fsk fsm fsn fso fss fst fsu ftf ftk ftm ftn fto fts ftt ftu fuf fuk fum fun fuo fus fut fuu k-t kff kfm kfo kfs kfu kkk kkm kkn kks kkt kku kmf kmk kmm kmo kms kmt kmu kn- knf knk knm knn kno knt knu kof kok kom kon koo kos kot kou ksf ksk ksm ksn kso kss kst ksu ktf ktk ktm ktn kto kts ktt ktu kuk kum kun kus kut kuu m-f m-o mff mfm mfn mfo mfs mft mfu mkk mkm mkn mko mks mkt mku mmf mmk mmm mmn mmo mms mmt mmu mnf mnk mnm mnn mno mns mnt mnu mof mok mom mon moo mos mot mou msf msk msm msn mso mss mst msu mtf mtk mtm mtn mto mts mtt mtu muf muk mum mun mus mut muu nff nfk nfn nfo nfs nft nfu nkf nkk nkm nkn nko nks nkt nku nmk nmm nmn nmo nms nmt nmu nnf nnk nnm nnn nno nns nnt nnu no- nof nok nom non noo nos not nou nsf nsk nsm nsn nso nss nst nsu ntf ntk ntm ntn nto nts ntt ntu nuk num nun nuo nus nut nuu of- off ofm ofn ofo ofs oft ofu okk oko oks oku om- omf omm omn omo oms omt omu on- onf onk onn ono ons ont onu oo- oof ook oom oon ooo oos oot os- osf osk osm osn oso oss ost osu ot- otf otk otm otn oto ots ott otu ou- ouf ouk oum oun ouo ous out sff sfk sfm sfn sfo sfs sft sfu sk- skf skk skm sko sks skt sku smf smk smm smn smo sms smt smu snf snk snm snn sno sns snt snu sof sok som son soo sos sot sou ss- ssf ssk ssm ssn sso sss sst ssu stf stk stm stn sto sts stt stu suf suk sum sun suo sus sut suu tff tfk tfm tfn tfo tfs tft tfu tkk tkm tko tks tkt tmf tmk tmm tmn tmo tms tmt tmu tnf tnk tnm tnn tno tns tnt to- tof tok tom ton too tos tot tou tsf tsk tsm tsn tso tss tst tsu ttf ttk ttm ttn tto tts ttt ttu tuf tuk tum tun tuo tus tut tuu uff ufm ufn ufo ufs uft ufu ukf ukk ukn uku um- umf umm umn umo ums umt umu un- unf unk unm unn uno uns unt unu uok uom uon uoo uos uot usf usk usm usn uso uss ust usu utf utk utm utn uto uts utt utu uum uun uus uut uuu