rbp rbr rbt rbu re- rea reb ree ref rel ren reo rep rer ret reu rfa rfb rfe rff rfl rfn rfo rfp rfr rft rfu rla rle rlf rll rln rlo rlp rlr rlt rlu rna rnb rnn rno rnp rnr rnt rnu roa rob roe rof rol ron roo rop ror rot rou rpa rpb rpe rpf rpl rpn rpo rpp rpr rpt rpu rra rrb rrf rrl rrn rrp rrr rrt rru rta rtb rte rtf rtl rtn rto rtp rtr rtt rtu rua rub rue ruf run ruo rup rur rut ruu taa tab tae taf tal tan tao tap tar tat tau tba tbb tbe tbf tbl tbn tbo tbp tbr tbt tbu te- tea teb tee tef tel ten teo tep ter tet teu tfa tfb tfe tff tfl tfn tfo tfp tfr tft tfu tla tle tlf tll tln tlo tlp tlr tlt tlu tna tnb tne tnf tnl tnn tno tnp tnr tnt to- toa tob toe tof tol ton too top tor tot tou tpa tpb tpe tpf tpl tpn tpo tpp tpr tpt tpu tra trb tre trf trl trn tro trp trr trt tru tta ttb tte ttf ttl ttn tto ttp ttr ttt ttu tua tub tue tuf tul tun tuo tup tur tut tuu ua- uaa uab uae uaf ual uan uao uap uar uat uau uba ubb ube ubf ubl ubn ubo ubp ubr ubt ubu uea ueb uee uef uel uen uep uer uet ufa ufe uff ufl ufn ufo ufp ufr uft ufu ula ulb ule ulf ull uln ulo ulp ulr ult ulu un- una unb une unf unl unn uno unp unr unt unu uoa uob uoe uol uon uoo uop uor uot up- upa upb upe upf upn upo upp upr upt upu ur- ura urb ure urf url urn uro urp urr urt uru uta utb ute utf utl utn uto utp utr utt utu uua uue uun uur uut uuu