-al -er a-a a-b a-c aaa aab aac aae aah aal aap aar ab- aba abb abc abe abh abl abp abr ac- aca acb acc ace ach acl acp acr aea aeb aec aee aeh ael aep aer aha ahb ahc ahe ahh ahl ahp ahr al- ala alb alc ale alh all alp alr ap- apa apb apc ape aph apl app apr ar- ara arb arc are arh arl arp arr b-p baa bab bac bae bah bal bap bar bba bbb bbc bbe bbh bbl bbp bbr bca bcb bcc bce bch bcl bcp bcr be- bea beb bec bee beh bel bep ber bha bhb bhc bhe bhh bhl bhp bhr bla blb blc ble blh bll blp blr bpa bpb bpc bpe bph bpl bpp bpr bra brb bre brh brl brp brr c-- caa cab cac cae cah cal cap car cba cbb cbc cbe cbh cbl cbp cbr cca ccb ccc cce cch ccl ccp ccr ce- cea ceb cec cee ceh cel cep cer ch- cha chb chc che chh chl chp chr cl- cla clb clc cle clh cll clp clr cpa cpb cpc cpe cph cpl cpp cpr cra crb crc cre crh crl crp crr eaa eab eac eae eah eal eap ear eba ebb ebc ebe ebh ebl ebp ebr ec- eca ecb ecc ece ech ecl ecr eea eeb eec eee eel eep eer eha ehb ehc ehe ehh ehl ehp ehr ela elb elc ele elh ell elp elr ep- epa epb epc epe eph epl epp epr era erb erc ere erh erl erp err haa hab hac hae hah hal hap har hba hbb hbc hbe hbh hbl hbp hbr hca hcb hcc hce hch hcl hcp hcr he- hea heb hec hee heh hel hep her hha hhb hhc hhe hhh hhl hhp hhr hla hlb hlc hle hlh hll hlp hlr hpa hpb hpc hpe hph hpl hpp hpr hr- hra hrb hrc hre hrh hrl hrp hrr l-p la- laa lab lac lae lah lal lap lar lba lbb lbc lbe lbh lbl lbp lbr lca lcb lcc lce lch lcl lcp lcr lea leb lec lee leh lel lep ler lha lhb lhc lhh lhp lhr lla llb llc lle lll llp llr lpa lpb lpc lpe lph lpl lpp lpr lra lrb lrc lrh lrp lrr p-p paa pab pac pae pah pal pap par pba pbb pbc pbe pbl pbp pbr pca pcb pcc pce pch pcl pcp pcr pea peb pec pee peh pel pep per pha phb phc phe phl php phr pla plb plc ple plh pll plp plr ppa ppb ppc ppe pph ppl ppp ppr pra prb prc pre prh prl prp prr ra- raa rab rac rae rah ral rap rar rba rbb rbc rbe rbh rbl rbp rbr rca rcb rcc rce rch rcl rcp rcr re- rea reb rec ree reh rel rep rer rh- rha rhb rhc rhe rhh rhl rhp rhr rla rlc rle rlh rll rlp rlr rpa rpb rpc rpe rph rpl rpp rpr rra rrb rrc rrh rrl rrp rrr