-er a-a a-c aaa aac aae aah aak aar aav ac- aca acc ace ach ack acr acv aea aec aee aeh aek aer aev aha ahc ahe ahh ahk ahr ahv aka akc ake akh akk akr akv ar- ara arc are arh ark arr arv av- ava avc ave avh avk avr c-- caa cac cae cah cak car cav cca ccc cce cch cck ccr ccv ce- cea cec cee ceh cek cer cev ch- cha chc che chh chk chr chv cka ckc ckh cra crc cre crh crk crr crv cva cvc cve cvh cvk cvr cvv eaa eac eae eah eak ear eav ec- eca ecc ece ech eck ecr ecv eea eec eee eek eer eev eha ehc ehe ehh ehr ehv eka ekc eke ekh ekr ekv era erc ere erh erk err erv eva evc eve evh evr evv haa hac hae hah hak har hav hca hcc hce hch hck hcr hcv he- hea hec hee heh hek her hev hha hhc hhe hhh hhk hhr hhv hka hkh hkk hkr hr- hra hrc hre hrh hrk hrr hrv hv- hva hvc hvk hvr hvv ka- kaa kac kae kah kak kar kav kca kcc kce kch kck kcr ke- kea kec kee keh kek ker kev kha khe khh khk khr khv kkc kke kkh kkk kkr kkv kra krc krk krr krv kva kvh kvk kvr kvv ra- raa rac rae rah rak rar rav rca rcc rce rch rcr rcv re- rea rec ree reh rek rer rev rh- rha rhc rhe rhh rhr rhv rkc rke rkk rkv rra rrc rrh rrk rrr rva rvc rve rvh rvr rvv v-a v-e vaa vac vae vah vak var vav vca vcc vce vch vcr vea vec vee veh vek ver vh- vha vhc vhe vka vra vrc vre vrh vrk vrr vva vvc vvr vvv