-er a-a a-b a-i aaa aab aad aae aah aai aan aap aar ab- aba abb abd abe abh abi abn abp abr ad- ada adb add ade adh adi adn adp adr aea aeb aed aee aeh aei aen aep aer aha ahb ahd ahe ahh ahi ahn ahp ahr ai- aia aib aid aie aih aii ain aip air an- ana anb and ane anh ani ann anp anr ap- apa apb apd ape aph api apn app apr ar- ara arb ard are arh ari arn arp arr b-p baa bab bad bae bah bai ban bap bar bba bbb bbd bbe bbh bbi bbn bbp bbr bda bdb bdd bde bdh bdi bdp bdr be- bea beb bed bee beh bei ben bep ber bha bhb bhd bhe bhh bhi bhp bhr bi- bia bib bid bie bih bii bin bip bir bna bnb bnd bne bni bnn bnp bnr bpa bpb bpd bpe bph bpi bpn bpp bpr bra brb brd bre brh bri brn brp brr daa dab dad dae dah dai dan dap dar dba dbb dbd dbe dbh dbi dbn dbp dbr dda ddb ddd dde ddh ddi ddn ddp ddr de- dea deb ded dee deh dei den dep der dh- dha dhb dhd dhe dhh dhi dhp dhr di- dia dib did die dih dii din dip dir dna dnb dnd dne dnh dni dnn dnp dnr dpa dpb dpd dpe dph dpi dpn dpp dpr dra drb drd dre dri drn drp drr eaa eab ead eae eah eai ean eap ear eba ebb ebd ebe ebh ebi ebn ebp ebr ed- eda edb edd ede edh edi edn edp edr eea eeb eed eee een eep eer eha ehb ehd ehe ehh ehi ehn ehp ehr eia eib eid eie eii ein eip eir en- ena enb end ene enh eni enn enp enr ep- epa epb epd epe eph epi epn epp epr era erb erd ere erh eri ern erp err h-i haa hab had hae hah hai han hap har hba hbb hbd hbe hbh hbi hbn hbp hbr hda hdb hdd hde hdh hdi hdn hdp hdr he- hea heb hed hee heh hei hen hep her hha hhb hhd hhe hhh hhi hhn hhp hhr hia hib hid hie hih hii hin hip hir hna hnb hnd hne hnh hnn hpa hpb hpd hpe hph hpi hpn hpp hpr hr- hra hrb hrd hre hrh hri hrn hrp hrr i-d ia- iaa iab iad iae iah iai ian iap iar iba ibb ibd ibe ibh ibi ibn ibp ibr ida idb idd ide idh idi idn idp idr ie- iea ied iee iei ien iep ier iha ihb ihd ihe ihh ihi ihn ihp ihr iia iib iid iie iih iii iin iip iir in- ina inb ind ine inh ini inn inp inr ipa ipb ipd ipe ipi ipn ipp ipr ir- ira irb ird ire iri irn irp irr n-i naa nab nad nae nah nai nan nap nar nba nbb nbd nbe nbi nbn nbp nbr nda ndb ndd nde ndh ndi ndn ndp ndr ne- nea neb ned nee neh nei nen nep ner nha nhb nhd nhe nhh nhi nhn nhp nhr nia nib nid nie nih nii nin nip nir nna nnb nne nnh nni nnn nnp npa npb npd npe nph npi npn npp npr nra nrb nrd nre nri nrn nrp nrr p-p paa pab pad pae pah pai pan pap par pba pbb pbd pbe pbi pbn pbp pbr pda pdb pdd pde pdh pdi pdn pdp pdr pea peb ped pee peh pei pen pep per pha phb phd phe phi phn php phr pia pib pid pie pih pii pin pip pir pn- pna pnb pnd pne pnh pni pnn pnp pnr ppa ppb ppd ppe pph ppi ppn ppp ppr pra prb prd pre prh pri prn prp prr ra- raa rab rad rae rah rai ran rap rar rba rbb rbd rbe rbh rbi rbn rbp rbr rda rdb rdd rde rdh rdi rdn rdp rdr re- rea reb red ree reh rei ren rep rer rh- rha rhb rhd rhe rhh rhi rhn rhp rhr ria rib rid rie rih rii rin rip rir rna rnb rnd rnh rni rnn rnp rnr rpa rpb rpd rpe rph rpi rpn rpp rpr rra rrb rrd rrh rri rrn rrp rrr