-er -ic a-a a-b a-c a-i aaa aab aac aae aag aah aai aan aar ab- aba abb abc abe abg abh abi abn abr ac- aca acb acc ace acg ach aci acn acr aea aeb aec aee aeg aeh aei aen aer ag- aga agb agc age agg agh agi agn agr aha ahb ahc ahe ahg ahh ahi ahn ahr ai- aia aib aic aie aig aih aii ain air an- ana anb anc ane ang anh ani ann anr ar- ara arb arc are arg arh ari arn arr baa bab bac bae bag bah bai ban bar bba bbb bbc bbe bbg bbh bbi bbn bbr bca bcb bcc bce bcg bch bci bcn bcr be- bea beb bec bee beg beh bei ben ber bga bgb bgc bge bgg bgh bgi bgn bgr bha bhb bhc bhe bhg bhh bhi bhr bi- bia bib bic bie big bih bii bin bir bna bnb bnc bne bng bni bnn bnr bra brb bre brg brh bri brn brr c-- caa cab cac cae cag cah cai can car cba cbb cbc cbe cbg cbh cbi cbn cbr cca ccb ccc cce ccg cch cci ccn ccr ce- cea ceb cec cee ceg ceh cei cen cer cga cgb cgc cge cgg cgh cgi cgn cgr ch- cha chb chc che chg chh chi chn chr ci- cia cib cic cie cig cih cii cin cir cn- cna cnb cnc cne cng cnh cni cnn cnr cra crb crc cre crg crh cri crn crr eaa eab eac eae eag eah eai ean ear eba ebb ebc ebe ebg ebh ebi ebn ebr ec- eca ecb ecc ece ecg ech eci ecn ecr eea eeb eec eee eeg een eer ega egb egc ege egg egh egi egn egr eha ehb ehc ehe ehg ehh ehi ehn ehr eia eib eic eie eig eii ein eir en- ena enb enc ene eng enh eni enn enr era erb erc ere erg erh eri ern err gaa gab gac gae gag gah gai gan gar gba gbc gbe gbg gbh gbi gbn gbr gca gcb gcc gce gcg gch gci gcn gcr ge- gea geb gec gee geg geh gei gen ger gga ggb ggc ggg ggh ggi ggn ggr gha ghb ghc ghe ghg ghh ghi ghn ghr gia gib gic gie gig gih gii gin gir gna gnb gnc gne gni gnn gnr gra grb grc gre grg grh gri grn grr h-i haa hab hac hae hag hah hai han har hba hbb hbc hbe hbg hbh hbi hbn hbr hca hcb hcc hce hcg hch hci hcn hcr he- hea heb hec hee heg heh hei hen her hga hgb hgc hge hgg hgh hgi hgn hgr hha hhb hhc hhe hhg hhh hhi hhn hhr hia hib hic hie hig hih hii hin hir hna hnb hnc hne hng hnh hnn hr- hra hrb hrc hre hrg hrh hri hrn hrr ia- iaa iab iac iae iag iah iai ian iar iba ibb ibc ibe ibg ibh ibi ibn ibr ica icb icc ice icg ich ici icn icr ie- iea iec iee ieg iei ien ier iga igb igc ige igg igh igi ign igr iha ihb ihc ihe ihg ihh ihi ihn ihr iia iib iic iie iih iii iin iir in- ina inb inc ine ing inh ini inn inr ir- ira irb irc ire irg iri irn irr n-i naa nab nac nae nag nah nai nan nar nba nbb nbc nbe nbg nbi nbn nbr nca ncb ncc nce ncg nch nci ncn ncr ne- nea neb nec nee neg neh nei nen ner nga ngb ngc nge ngg ngh ngi ngn nha nhb nhc nhe nhg nhh nhi nhn nhr nia nib nic nie nig nih nii nin nir nna nnb nnc nne nng nnh nni nnn nra nrb nrc nre nrg nri nrn nrr ra- raa rab rac rae rag rah rai ran rar rba rbb rbc rbe rbg rbh rbi rbn rbr rca rcb rcc rce rcg rch rci rcn rcr re- rea reb rec ree reg reh rei ren rer rga rgb rgc rge rgg rgh rgi rgn rgr rh- rha rhb rhc rhe rhg rhh rhi rhn rhr ria rib ric rie rig rih rii rin rir rna rnb rnc rng rnh rni rnn rnr rra rrb rrc rrg rrh rri rrn rrr