-al -ol a-a a-b a-c aaa aab aac aah aal aan aao aap aar ab- aba abb abc abh abl abn abo abp abr ac- aca acb acc ach acl acn aco acp acr aha ahb ahc ahh ahl ahn aho ahp ahr al- ala alb alc alh all aln alo alp alr an- ana anb anc anh anl ann ano anp anr aoa aob aoc aoh aol aon aoo aop aor ap- apa apb apc aph apl apn apo app apr ar- ara arb arc arh arl arn aro arp arr b-p baa bab bac bah bal ban bao bap bar bba bbb bbc bbh bbl bbn bbo bbp bbr bca bcb bcc bch bcl bcn bco bcp bcr bha bhb bhc bhh bhl bho bhp bhr bla blb blc blh bll bln blo blp blr bna bnb bnc bnl bnn bno bnp bnr boa bob boc boh bol bon boo bop bor bpa bpb bpc bph bpl bpn bpo bpp bpr bra brb brh brl brn bro brp brr c-- caa cab cac cah cal can cao cap car cba cbb cbc cbh cbl cbn cbo cbp cbr cca ccb ccc cch ccl ccn cco ccp ccr ch- cha chb chc chh chl chn cho chp chr cl- cla clb clc clh cll cln clo clp clr cn- cna cnb cnc cnh cnl cnn cno cnp cnr co- coa cob coc coh col con coo cop cor cpa cpb cpc cph cpl cpn cpo cpp cpr cra crb crc crh crl crn cro crp crr haa hab hac hah hal han hao hap har hba hbb hbc hbh hbl hbn hbo hbp hbr hca hcb hcc hch hcl hcn hco hcp hcr hha hhb hhc hhh hhl hhn hho hhp hhr hla hlb hlc hlh hll hln hlo hlp hlr hna hnb hnc hnh hnl hnn hno hoa hob hoc hoh hol hon hoo hop hor hpa hpb hpc hph hpl hpn hpo hpp hpr hr- hra hrb hrc hrh hrl hrn hro hrp hrr l-p la- laa lab lac lah lal lan lao lap lar lba lbb lbc lbh lbl lbo lbp lbr lca lcb lcc lch lcl lcn lco lcp lcr lha lhb lhc lhh lho lhp lhr lla llb llc lll lln llo llp llr lna lnb lnc lnh lnl lnn lno lnp lnr loa lob loc loh lol lon loo lop lor lpa lpb lpc lph lpl lpn lpo lpp lpr lra lrb lrc lrh lrn lro lrp lrr naa nab nac nah nal nan nao nap nar nba nbb nbc nbl nbn nbo nbp nbr nca ncb ncc nch ncl ncn nco ncp ncr nha nhb nhc nhh nhl nhn nhp nhr nla nlb nlc nlh nll nln nlo nlp nlr nna nnb nnc nnh nnl nnn nno nnp no- noa nob noc noh nol non noo nop nor npa npb npc nph npl npn npo npp npr nra nrb nrc nrl nrn nro nrp nrr oaa oab oac oah oal oan oao oap oar ob- oba obb obc obh obl obn obo obp obr oc- oca ocb occ och ocl ocn oco ocp ocr oha ohc ohh ohl ohn oho ohp ohr ola olb olc oll oln olo olp on- ona onb onc onh onl onn ono onp onr oo- ooa oob ooc ooh ool oon ooo oop oor op- opa opb opc oph opl opn opo opp opr or- ora orb orc orh orl orn oro orp orr p-p paa pab pac pah pal pan pao pap par pba pbb pbc pbl pbn pbo pbp pbr pca pcb pcc pch pcl pcn pco pcp pcr pha phb phc phl phn pho php phr pla plb plc plh pll pln plo plp plr pn- pna pnb pnc pnh pnl pnn pno pnp pnr poa pob poc poh pol pon poo pop por ppa ppb ppc pph ppl ppn ppo ppp ppr pra prb prc prh prl prn pro prp prr ra- raa rab rac rah ral ran rao rap rar rba rbb rbc rbh rbl rbn rbo rbp rbr rca rcb rcc rch rcl rcn rco rcp rcr rh- rha rhb rhc rhh rhl rhn rho rhp rhr rla rlc rlh rll rln rlo rlp rlr rna rnb rnc rnh rnn rno rnp rnr roa rob roc roh rol ron roo rop ror rpa rpb rpc rph rpl rpn rpo rpp rpr rra rrb rrc rrh rrl rrn rrp rrr