-er a-a a-b a-i aaa aab aae aah aai aao aap aar aav ab- aba abb abe abh abi abo abp abr abv aea aeb aee aeh aei aeo aep aer aev aha ahb ahe ahh ahi aho ahp ahr ahv ai- aia aib aie aih aii aio aip air aiv aoa aob aoe aoh aoi aoo aop aor aov ap- apa apb ape aph api apo app apr apv ar- ara arb are arh ari aro arp arr arv av- ava avb ave avh avi avo avp avr b-p baa bab bae bah bai bao bap bar bav bba bbb bbe bbh bbi bbo bbp bbr be- bea beb bee beh bei beo bep ber bev bha bhb bhe bhh bhi bho bhp bhr bhv bi- bia bib bie bih bii bio bip bir biv boa bob boe boh boi boo bop bor bov bpa bpb bpe bph bpi bpo bpp bpr bpv bra brb bre brh bri bro brp brr brv bva bvb bve bvh bvi bvo bvp bvr bvv eaa eab eae eah eai eao eap ear eav eba ebb ebe ebh ebi ebo ebp ebr ebv eea eeb eee eeo eep eer eev eha ehb ehe ehh ehi eho ehp ehr ehv eia eib eie eii eio eip eir eiv eo- eoa eob eoe eoh eoi eoo eop eor ep- epa epb epe eph epi epo epp epr era erb ere erh eri ero erp err erv eva evb eve evh evi evo evp evr evv h-i haa hab hae hah hai hao hap har hav hba hbb hbe hbh hbi hbo hbp hbr hbv he- hea heb hee heh hei heo hep her hev hha hhb hhe hhh hhi hho hhp hhr hhv hia hib hie hih hii hio hip hir hiv hoa hob hoe hoh hoi hoo hop hor hov hpa hpb hpe hph hpi hpo hpp hpr hpv hr- hra hrb hre hrh hri hro hrp hrr hrv hv- hva hvb hvo hvp hvr hvv i-v ia- iaa iab iae iah iai iao iap iar iav iba ibb ibe ibh ibi ibo ibp ibr ibv ie- iea iee iei iep ier iev iha ihb ihe ihh ihi iho ihp ihr ihv iia iib iie iih iii iio iip iir io- ioa iob ioe ioh ioi ioo iop ior iov ipa ipb ipe ipi ipo ipp ipr ipv ir- ira irb ire iri iro irp irr irv iva ivb ive ivi ivo ivp ivr ivv o-i oaa oab oae oah oai oao oap oar oav ob- oba obb obe obh obi obo obp obr obv oea oeb oee oeh oei oeo oep oer oha ohe ohh ohi oho ohp ohr oia oib oie oii oio oip oir oiv oo- ooa oob ooh ooi ooo oop oor oov op- opa opb ope oph opi opo opp opr opv or- ora orb ore orh ori oro orp orr orv ov- ova ovb ove ovh ovi ovo ovp ovv p-p paa pab pae pah pai pao pap par pav pba pbb pbe pbi pbo pbp pbr pea peb pee peh pei peo pep per pev pha phb phe phi pho php phr phv pia pib pie pih pii pio pip pir piv poa pob poe poh poi poo pop por pov ppa ppb ppe pph ppi ppo ppp ppr ppv pra prb pre prh pri pro prp prr prv pva pvb pve pvh pvi pvo pvp pvr pvv ra- raa rab rae rah rai rao rap rar rav rba rbb rbe rbh rbi rbo rbp rbr re- rea reb ree reh rei reo rep rer rev rh- rha rhb rhe rhh rhi rho rhp rhr rhv ria rib rie rih rii rio rip rir riv roa rob roe roh roi roo rop ror rov rpa rpb rpe rph rpi rpo rpp rpr rpv rra rrb rrh rri rrp rrr rva rvb rve rvh rvi rvo rvp rvr rvv v-a v-e vaa vab vae vah vai vao vap var vav vba vbh vbi vbo vbr vbv vea veb vee veh vei veo vep ver vh- vha vhb vhe vhi vho vhp vi- via vib vie vii vio vip vir viv voa vob voe voh voi voo vop vor vov vpa vpb vpe vph vpi vpo vpp vpr vra vrb vre vrh vri vrp vrr vva vvb vvi vvo vvr vvv