rnn rno rnp rnr rnt roa roc roe rog roi ron roo rop ror rot rox rpa rpc rpe rpg rpi rpn rpo rpp rpr rpt rpx rra rrc rrg rri rrn rrp rrr rrt rta rtc rte rtg rti rtn rto rtp rtr rtt rtx rxp rxr t-x taa tac tae tag tai tan tao tap tar tat tax tca tcc tce tcg tci tcn tco tcp tcr tct tcx te- tea tec tee teg tei ten teo tep ter tet tex tga tgc tge tgg tgi tgn tgo tgp tgr tgt tia tic tie tig tii tin tio tip tir tit tix tna tnc tne tng tni tnn tno tnp tnr tnt tnx to- toa toc toe tog toi ton too top tor tot tox tpa tpc tpe tpg tpi tpn tpo tpp tpr tpt tpx tra trc tre trg tri trn tro trp trr trt trx tta ttc tte ttg tti ttn tto ttp ttr ttt ttx txe txi txn txt xaa xac xag xan xap xar xat xci xcp xcr xcx xee xeg xen xep xer xet xex xge xgi xgp xia xic xie xii xin xio xit xix xna xnc xno xoa xoc xog xoi xon xoo xop xor xot xox xpa xpc xpe xpg xpn xpo xpp xpt xrc xrt xrx xtc xti xtp xtr xtx xxi xxo xxp xxx