ddd ddf ddk ddo ddr dds ddt ddu dfd dff dfk dfo dfr dfs dft dfu dkk dko dkr dks dkt dku dod dof dok doo dor dos dot dou drd drk dro drr drs drt dru dsd dsf dsk dso dsr dss dst dsu dtd dtf dtk dto dtr dts dtt dtu dud duf duk duo dur dus dut fdd fdf fdk fdo fdr fds fdt fdu ffd fff ffk ffo ffr ffs fft ffu fkf fkk fkt fof fok foo for fos fot fou frd frf frk fro frr frs frt fru fsd fsf fsk fso fsr fss fst fsu ftd ftf ftk fto ftr fts ftt ftu fud fuf fuk fuo fur fus fut fuu k-t kdf kdk kdo kdr kds kdt kdu kfd kff kfo kfs kfu kkk kkr kks kkt kku kod kof kok koo kor kos kot kou krd krf krk kro krr krs krt kru ksd ksf ksk kso ksr kss kst ksu ktf ktk kto ktr kts ktt ktu kud kuk kur kus kut kuu odd odf odo odr ods odt odu of- ofd off ofo ofr ofs oft ofu okd okk oko okr oks oku oo- ood oof ook ooo oor oos oot or- ord orf ork oro orr ors ort oru os- osd osf osk oso osr oss ost osu ot- otd otf otk oto otr ots ott otu ou- oud ouf ouk ouo our ous out rdd rdf rdo rdr rds rdt rdu rfd rff rfk rfo rfr rfs rft rfu rkf rkk rko rks rkt rku rod rof rok roo ror ros rot rou rrd rrf rrk rrr rrs rrt rru rsd rsf rsk rso rsr rss rst rsu rtd rtf rtk rto rtr rts rtt rtu rud ruf ruk ruo rur rus rut ruu sdd sdf sdk sdo sdr sds sdt sdu sfd sff sfk sfo sfr sfs sft sfu sk- skd skf skk sko skr sks skt sku sod sof sok soo sor sos sot sou sr- srd srf srk sro srr srs srt ss- ssd ssf ssk sso ssr sss sst ssu std stf stk sto str sts stt stu sud suf suk suo sur sus sut suu tdd tdf tdk tdo tdr tds tdt tdu tfd tff tfk tfo tfr tfs tft tfu tkk tko tkr tks tkt to- tod tof tok too tor tos tot tou trd trf trk tro trr trs trt tru tsd tsf tsk tso tsr tss tst tsu ttd ttf ttk tto ttr tts ttt ttu tud tuf tuk tuo tur tus tut tuu udd udf udk udo udr uds udt udu ufd uff ufo ufr ufs uft ufu ukf ukk ukr uku uod uok uoo uor uos uot ur- urd urf urk uro urr urs urt uru usd usf usk uso usr uss ust usu utd utf utk uto utr uts utt utu uur uus uut uuu

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