-er -ic a-a a-b a-c a-i aaa aab aac aae aah aai aao aar aau ab- aba abb abc abe abh abi abo abr abu ac- aca acb acc ace ach aci aco acr acu aea aeb aec aee aeh aei aeo aer aeu aha ahb ahc ahe ahh ahi aho ahr ahu ai- aia aib aic aie aih aii aio air aiu aoa aob aoc aoe aoh aoi aoo aor aou ar- ara arb arc are arh ari aro arr aru au- aua aub auc aue auh aui auo aur b-u baa bab bac bae bah bai bao bar bau bba bbb bbc bbe bbh bbi bbo bbr bbu bca bcb bcc bce bch bci bco bcr bcu be- bea beb bec bee beh bei beo ber beu bha bhb bhc bhe bhh bhi bho bhr bhu bi- bia bib bic bie bih bii bio bir biu boa bob boc boe boh boi boo bor bou bra brb bre brh bri bro brr bru bua bub buc bue buh bui buo bur buu c-- caa cab cac cae cah cai cao car cau cba cbb cbc cbe cbh cbi cbo cbr cbu cca ccb ccc cce cch cci cco ccr ccu ce- cea ceb cec cee ceh cei ceo cer ceu ch- cha chb chc che chh chi cho chr chu ci- cia cib cic cie cih cii cio cir ciu co- coa cob coc coe coh coi coo cor cou cra crb crc cre crh cri cro crr cru cua cub cuc cue cuh cui cuo cur cuu eaa eab eac eae eah eai eao ear eau eba ebb ebc ebe ebh ebi ebo ebr ebu ec- eca ecb ecc ece ech eci eco ecr ecu eea eeb eec eee eeo eer eha ehb ehc ehe ehh ehi eho ehr ehu eia eib eic eie eii eio eir eiu eo- eoa eob eoc eoe eoh eoi eoo eor eou era erb erc ere erh eri ero err eru eu- eua eub euc eue eui eur h-i haa hab hac hae hah hai hao har hau hba hbb hbc hbe hbh hbi hbo hbr hbu hca hcb hcc hce hch hci hco hcr he- hea heb hec hee heh hei heo her heu hha hhb hhc hhe hhh hhi hho hhr hhu hia hib hic hie hih hii hio hir hiu hoa hob hoc hoe hoh hoi hoo hor hou hr- hra hrb hrc hre hrh hri hro hrr hru hua hub huc hue huh hui huo hur huu ia- iaa iab iac iae iah iai iao iar iau iba ibb ibc ibe ibh ibi ibo ibr ibu ica icb icc ice ich ici ico icr icu ie- iea iec iee iei ier iha ihb ihc ihe ihh ihi iho ihr ihu iia iib iic iie iih iii iio iir iiu io- ioa iob ioc ioe ioh ioi ioo ior iou ir- ira irb irc ire iri iro irr iru iu- iua iub iuc iue iui iur o-i oaa oab oac oae oah oai oao oar oau ob- oba obb obc obe obh obi obo obr obu oc- oca ocb occ och oci oco ocr ocu oea oeb oec oee oeh oei oeo oer oha ohc ohe ohh ohi oho ohr ohu oia oib oic oie oii oio oir oiu oo- ooa oob ooc ooh ooi ooo oor or- ora orb orc ore orh ori oro orr oru ou- oua ouc oue ouh oui ouo our ra- raa rab rac rae rah rai rao rar rau rba rbb rbc rbe rbh rbi rbo rbr rbu rca rcb rcc rce rch rci rco rcr rcu re- rea reb rec ree reh rei reo rer reu rh- rha rhb rhc rhe rhh rhi rho rhr rhu ria rib ric rie rih rii rio rir roa rob roc roe roh roi roo ror rou rra rrb rrc rrh rri rrr rru rua rub ruc rue ruh rui ruo rur ruu ua- uaa uab uac uae uah uai uao uar uau uba ubb ubc ube ubh ubi ubo ubr ubu uca ucb ucc uce uch uci uco ucr ucu uea ueb uec uee ueh uei uer uha uhb uhc uhe uhh uhi uho uhr uhu uia uib uic uie uii uio uir uiu uoa uob uoc uoe uoo uor ur- ura urb urc ure uri uro urr uru uua uuc uue uur uuu