-er a-a a-t aaa aae aak aan aap aar aat aea aee aek aen aep aer aet aka ake akk akn akp akr an- ana ane ank ann anp anr ant ap- apa ape apk apn app apr apt ar- ara are ark arn arp arr art at- ata ate atn atp atr att eaa eae eak ean eap ear eat eea eee eek een eep eer eet eka eke ekp ekr ekt en- ena ene enk enn enp enr ent ep- epa epe epn epp epr ept era ere erk ern erp err ert eta ete etk etn etp etr ett k-t ka- kaa kae kak kan kap kar kat ke- kea kee kek ken kep ker ket kke kkk kkn kkp kkr kkt kn- kna kne knk knn knp knr knt kpa kpe kpk kpn kpp kpr kpt kra krk krn krp krr krt kta kte ktk ktn ktp ktr ktt naa nae nak nan nap nar nat ne- nea nee nek nen nep ner net nka nke nkk nkn nkp nkr nkt nna nne nnk nnn nnp nnt npa npe npn npp npr npt nra nre nrk nrn nrp nrr nrt nta nte ntk ntn ntp ntr ntt p-p paa pae pak pan pap par pat pea pee pek pen pep per pet pka pke pkn pkp pkr pkt pn- pna pne pnk pnn pnp pnr pnt ppa ppe ppk ppn ppp ppr ppt pra pre prk prn prp prr prt pt- pta pte ptk ptn ptp ptr ptt ra- raa rae rak ran rap rar rat re- rea ree rek ren rep rer ret rke rkk rkp rkt rna rnn rnp rnr rnt rpa rpe rpk rpn rpp rpr rpt rra rrk rrn rrp rrr rrt rta rte rtk rtn rtp rtr rtt taa tae tak tan tap tar tat te- tea tee tek ten tep ter tet tka tke tkk tkp tkr tkt tna tne tnk tnn tnp tnr tnt tpa tpe tpk tpn tpp tpr tpt tra tre trk trn trp trr trt tta tte ttk ttn ttp ttr ttt