nus nut nuu o-i ob- obb obd obe obg obi obl obn obo obr obs obt obu odb odd ode odg odi odl odn odo odr ods odt odu oeb oed oee oeg oei oel oen oeo oer oes oet ogd oge ogg ogi ogl ogn ogo ogs ogt oib oid oie oii oil oin oio oir ois oit oiu olb old ole olg oli oll oln olo ols olt olu on- onb ond one ong oni onl onn ono onr ons ont onu oo- oob ood oog ooi ool oon ooo oor oos oot or- orb ord ore org ori orl orn oro orr ors ort oru os- osb osd ose osg osi osl osn oso osr oss ost osu ot- otb otd ote otg oti otl otn oto otr ots ott otu ou- oud oue oui oul oun ouo our ous out rbb rbd rbe rbg rbi rbl rbn rbo rbr rbs rbt rbu rdb rdd rde rdg rdi rdl rdn rdo rdr rds rdt rdu re- reb red ree reg rei rel ren reo rer res ret reu rgb rgd rge rgg rgi rgn rgo rgr rgs rgt rib rid rie rig rii ril rin rio rir ris rit rld rle rlg rli rll rln rlo rlr rls rlt rlu rnb rnd rng rni rnn rno rnr rns rnt rnu rob rod roe rog roi rol ron roo ror ros rot rou rrb rrd rrg rri rrl rrn rrr rrs rrt rru rsb rsd rse rsg rsi rsl rsn rso rsr rss rst rsu rtb rtd rte rtg rti rtl rtn rto rtr rts rtt rtu rub rud rue rug rui run ruo rur rus rut ruu sbb sbd sbe sbg sbi sbl sbn sbo sbr sbs sbt sbu sdb sdd sde sdg sdi sdl sdn sdo sdr sds sdt sdu se- seb sed see seg sei sel sen seo ser ses set seu sgb sgd sge sgg sgi sgl sgn sgo sgr sgs sgt sgu sib sid sie sig sii sil sin sio sir sis sit siu slb sld sle slg sli sll sln slo slr sls slt slu snb snd sne sng sni snl snn sno snr sns snt snu sob sod soe sog soi sol son soo sor sos sot sou sr- srb srd sre srg sri srl srn sro srr srs srt ss- ssb ssd sse ssg ssi ssl ssn sso ssr sss sst ssu stb std ste stg sti stl stn sto str sts stt stu sub sud sue sug sui sul sun suo sur sus sut suu tbb tbd tbe tbg tbi tbl tbn tbo tbr tbs tbt tbu tdb tdd tde tdg tdi tdl tdn tdo tdr tds tdt tdu te- teb ted tee teg tei tel ten teo ter tes tet teu tgb tge tgg tgi tgl tgn tgo tgr tgs tgt tgu tib tid tie tig tii til tin tio tir tis tit tiu tld tle tlg tli tll tln tlo tlr tls tlt tlu tnb tnd tne tng tni tnl tnn tno tnr tns tnt to- tob tod toe tog toi tol ton too tor tos tot tou trb trd tre trg tri trl trn tro trr trs trt tru tsb tsd tse tsg tsi tsl tsn tso tsr tss tst tsu ttb ttd tte ttg tti ttl ttn tto ttr tts ttt ttu tub tud tue tug tui tul tun tuo tur tus tut tuu ubb ube ubg ubi ubl ubn ubo ubr ubs ubt ubu udb udd ude udg udi udl udn udo udr uds udt udu ueb ued uee ueg uei uel uen uer ues uet ugb uge ugg ugi ugl ugn ugo ugr ugs ugt ugu uib uid uie uig uii uil uin uio uir uis uit uiu ulb uld ule ulg uli ull uln ulo ulr uls ult ulu un- unb und une ung uni unl unn uno unr uns unt unu uob uod uoe uog uol uon uoo uor uos uot ur- urb urd ure urg uri url urn uro urr urs urt uru usb usd use usg usi usl usn uso usr uss ust usu utb utd ute uti utl utn uto utr uts utt utu uue uug uun uur uus uut uuu