-er a-a a-t aaa aae aak aap aar aat aea aee aek aep aer aet aka ake akk akp akr ap- apa ape apk app apr apt ar- ara are ark arp arr art at- ata ate atp atr att eaa eae eak eap ear eat eea eee eek eep eer eet eka eke ekp ekr ekt ep- epa epe epp epr ept era ere erk erp err ert eta ete etk etp etr ett k-t ka- kaa kae kak kap kar kat ke- kea kee kek kep ker ket kke kkk kkp kkr kkt kpa kpe kpk kpp kpr kpt kra krk krp krr krt kta kte ktk ktp ktr ktt p-p paa pae pak pap par pat pea pee pek pep per pet pka pke pkp pkr pkt ppa ppe ppk ppp ppr ppt pra pre prk prp prr prt pt- pta pte ptk ptp ptr ptt ra- raa rae rak rap rar rat re- rea ree rek rep rer ret rke rkk rkp rkt rpa rpe rpk rpp rpr rpt rra rrk rrp rrr rrt rta rte rtk rtp rtr rtt taa tae tak tap tar tat te- tea tee tek tep ter tet tka tke tkk tkp tkr tkt tpa tpe tpk tpp tpr tpt tra tre trk trp trr trt tta tte ttk ttp ttr ttt