nia nib nid nie nig nii nik nil nin nir nis nka nke nki nkk nkn nkr nks nla nlb nld nle nlg nli nlk nll nln nlr nls nna nnb nne nng nni nnk nnl nnn nns nra nrb nrd nre nrg nri nrk nrl nrn nrr nrs nsa nsb nsd nse nsg nsi nsk nsl nsn nsr nss ra- raa rab rad rae rag rai rak ral ran rar ras rba rbb rbd rbe rbg rbi rbk rbl rbn rbr rbs rda rdb rdd rde rdg rdi rdl rdn rdr rds re- rea reb red ree reg rei rek rel ren rer res rga rgb rgd rge rgg rgi rgk rgn rgr rgs ria rib rid rie rig rii rik ril rin rir ris rkb rke rkg rkk rks rla rld rle rlg rli rll rln rlr rls rna rnb rnd rng rni rnn rnr rns rra rrb rrd rrg rri rrk rrl rrn rrr rrs rsa rsb rsd rse rsg rsi rsk rsl rsn rsr rss saa sab sad sae sag sai sak sal san sar sas sba sbb sbd sbe sbg sbi sbk sbl sbn sbr sbs sda sdb sdd sde sdg sdi sdk sdl sdn sdr sds se- sea seb sed see seg sei sek sel sen ser ses sga sgb sgd sge sgg sgi sgk sgl sgn sgr sgs sia sib sid sie sig sii sik sil sin sir sis sk- ska skb skd ske skg ski skk skl skr sks sla slb sld sle slg sli slk sll sln slr sls sna snb snd sne sng sni snk snl snn snr sns sr- sra srb srd sre srg sri srk srl srn srr srs ss- ssa ssb ssd sse ssg ssi ssk ssl ssn ssr sss