rnn rno rnp rnr rnt rnu roa rob roe rof rok ron roo rop ror rot rou rpa rpb rpe rpf rpk rpn rpo rpp rpr rpt rpu rra rrb rrf rrk rrn rrp rrr rrt rru rta rtb rte rtf rtk rtn rto rtp rtr rtt rtu rua rub rue ruf ruk run ruo rup rur rut ruu taa tab tae taf tak tan tao tap tar tat tau tba tbb tbe tbf tbk tbn tbo tbp tbr tbt tbu te- tea teb tee tef tek ten teo tep ter tet teu tfa tfb tfe tff tfk tfn tfo tfp tfr tft tfu tka tkb tke tkk tko tkp tkr tkt tna tnb tne tnf tnk tnn tno tnp tnr tnt to- toa tob toe tof tok ton too top tor tot tou tpa tpb tpe tpf tpk tpn tpo tpp tpr tpt tpu tra trb tre trf trk trn tro trp trr trt tru tta ttb tte ttf ttk ttn tto ttp ttr ttt ttu tua tub tue tuf tuk tun tuo tup tur tut tuu ua- uaa uab uae uaf uak uan uao uap uar uat uau uba ubb ube ubf ubk ubn ubo ubp ubr ubt ubu uea ueb uee uef uen uep uer uet ufa ufe uff ufn ufo ufp ufr uft ufu uka ukb uke ukf ukk ukn ukp ukr uku un- una unb une unf unk unn uno unp unr unt unu uoa uob uoe uok uon uoo uop uor uot up- upa upb upe upf upk upn upo upp upr upt upu ur- ura urb ure urf urk urn uro urp urr urt uru uta utb ute utf utk utn uto utp utr utt utu uua uue uun uur uut uuu