rna rnc rnm rnn rno rnr rnt rnu roa roc roe rof rok rom ron roo ror rot rou rra rrc rrf rrk rrm rrn rrr rrt rru rta rtc rte rtf rtk rtm rtn rto rtr rtt rtu rua ruc rue ruf ruk rum run ruo rur rut ruu taa tac tae taf tak tam tan tao tar tat tau tca tcc tce tcf tck tcm tcn tco tcr tct tcu te- tea tec tee tef tek tem ten teo ter tet teu tfa tfc tfe tff tfk tfm tfn tfo tfr tft tfu tka tkc tke tkk tkm tko tkr tkt tma tmc tme tmf tmk tmm tmn tmo tmr tmt tmu tna tnc tne tnf tnk tnm tnn tno tnr tnt to- toa toc toe tof tok tom ton too tor tot tou tra trc tre trf trk trm trn tro trr trt tru tta ttc tte ttf ttk ttm ttn tto ttr ttt ttu tua tuc tue tuf tuk tum tun tuo tur tut tuu ua- uaa uac uae uaf uak uam uan uao uar uat uau uca ucc uce ucf uck ucm ucn uco ucr uct ucu uea uec uee uef uem uen uer uet ufa ufc ufe uff ufm ufn ufo ufr uft ufu uka ukc uke ukf ukk ukn ukr uku um- uma umc ume umf umm umn umo umr umt umu un- una unc une unf unk unm unn uno unr unt unu uoa uoc uoe uok uom uon uoo uor uot ur- ura urc ure urf urk urm urn uro urr urt uru uta utc ute utf utk utm utn uto utr utt utu uua uuc uue uum uun uur uut uuu