-er -ic a-a a-b a-c a-i aaa aab aac aad aae aai aao aar aau aav ab- aba abb abc abd abe abi abo abr abu abv ac- aca acb acc acd ace aci aco acr acu acv ad- ada adb adc add ade adi ado adr adu adv aea aeb aec aed aee aei aeo aer aeu aev ai- aia aib aic aid aie aii aio air aiu aiv aoa aob aoc aod aoe aoi aoo aor aou aov ar- ara arb arc ard are ari aro arr aru arv au- aua aub auc aud aue aui auo aur auv av- ava avb avc avd ave avi avo avr avu b-u baa bab bac bad bae bai bao bar bau bav bba bbb bbc bbd bbe bbi bbo bbr bbu bca bcb bcc bcd bce bci bco bcr bcu bcv bda bdb bdc bdd bde bdi bdo bdr bdu bdv be- bea beb bec bed bee bei beo ber beu bev bi- bia bib bic bid bie bii bio bir biu biv boa bob boc bod boe boi boo bor bou bov bra brb brd bre bri bro brr bru brv bua bub buc bud bue bui buo bur buu bva bvb bvc bvd bve bvi bvo bvr bvu bvv c-- caa cab cac cad cae cai cao car cau cav cba cbb cbc cbd cbe cbi cbo cbr cbu cbv cca ccb ccc ccd cce cci cco ccr ccu ccv cda cdb cdc cdd cde cdi cdo cdr cdu cdv ce- cea ceb cec ced cee cei ceo cer ceu cev ci- cia cib cic cid cie cii cio cir ciu civ co- coa cob coc cod coe coi coo cor cou cov cra crb crc crd cre cri cro crr cru crv cua cub cuc cud cue cui cuo cur cuu cuv cva cvb cvc cvd cve cvi cvo cvr cvu cvv daa dab dac dad dae dai dao dar dau dav dba dbb dbc dbd dbe dbi dbo dbr dbu dbv dca dcb dcc dcd dce dci dco dcr dcu dcv dda ddb ddc ddd dde ddi ddo ddr ddu de- dea deb dec ded dee dei deo der deu dev di- dia dib dic did die dii dio dir diu div doa dob doc dod doe doi doo dor dou dov dra drb drc drd dre dri dro drr dru drv dua dub duc dud due dui duo dur duv dva dvb dvc dvd dve dvi dvr dvu eaa eab eac ead eae eai eao ear eau eav eba ebb ebc ebd ebe ebi ebo ebr ebu ebv ec- eca ecb ecc ecd ece eci eco ecr ecu ecv ed- eda edb edc edd ede edi edo edr edu eea eeb eec eed eee eeo eer eev eia eib eic eid eie eii eio eir eiu eiv eo- eoa eob eoc eod eoe eoi eoo eor eou era erb erc erd ere eri ero err eru erv eu- eua eub euc eud eue eui eur euv eva evb evc evd eve evi evo evr evv i-d i-v ia- iaa iab iac iad iae iai iao iar iau iav iba ibb ibc ibd ibe ibi ibo ibr ibu ibv ica icb icc icd ice ici ico icr icu icv ida idb idc idd ide idi ido idr idu idv ie- iea iec ied iee iei ier iev iia iib iic iid iie iii iio iir iiu io- ioa iob ioc iod ioe ioi ioo ior iou iov ir- ira irb irc ird ire iri iro irr iru irv iu- iua iub iuc iud iue iui iur iva ivb ivc ivd ive ivi ivo ivr ivu ivv o-i oaa oab oac oad oae oai oao oar oau oav ob- oba obb obc obd obe obi obo obr obu obv oc- oca ocb occ ocd oci oco ocr ocu ocv oda odb odc odd ode odi odo odr odu odv oea oeb oec oed oee oei oeo oer oia oib oic oid oie oii oio oir oiu oiv oo- ooa oob ooc ood ooi ooo oor oov or- ora orb orc ord ore ori oro orr oru orv ou- oua ouc oud oue oui ouo our ov- ova ovb ovc ovd ove ovi ovo ovv ra- raa rab rac rad rae rai rao rar rau rav rba rbb rbc rbd rbe rbi rbo rbr rbu rca rcb rcc rcd rce rci rco rcr rcu rcv rda rdb rdc rdd rde rdi rdo rdr rdu rdv re- rea reb rec red ree rei reo rer reu rev ria rib ric rid rie rii rio rir riv roa rob roc rod roe roi roo ror rou rov rra rrb rrc rrd rri rrr rru rua rub ruc rud rue rui ruo rur ruu ruv rva rvb rvc rvd rve rvi rvo rvr rvu rvv ua- uaa uab uac uad uae uai uao uar uau uav uba ubb ubc ube ubi ubo ubr ubu ubv uca ucb ucc ucd uce uci uco ucr ucu ucv uda udb udc udd ude udi udo udr udu udv uea ueb uec ued uee uei uer uia uib uic uid uie uii uio uir uiu uoa uob uoc uod uoe uoo uor ur- ura urb urc urd ure uri uro urr uru uua uuc uue uur uuu uva uvb uvc uve uvo uvu uvv v-a v-e vaa vab vac vad vae vai vao var vau vav vba vbc vbd vbi vbo vbr vbv vca vcc vcd vce vci vco vcr vcu vdb vdc vdd vde vdi vdo vdr vdu vdv vea veb vec ved vee vei veo ver veu vi- via vib vic vid vie vii vio vir viu viv voa vob voc vod voe voi voo vor vou vov vra vrb vrc vrd vre vri vrr vru vue vur vuv vva vvb vvc vvi vvo vvr vvv

-vac a-be a-do a-ii a-iv aaaa aaab aaac aaad aaae aaai aaar aaav aaba aabb aabc aabd aabi aaca aacb aacc aacd aace aaci aaco aacr aacu