-al -ic -ol a-a a-b a-c a-i aaa aab aac aai aal aao aap aar ab- aba abb abc abi abl abo abp abr ac- aca acb acc aci acl aco acp acr ai- aia aib aic aii ail aio aip air al- ala alb alc ali all alo alp alr aoa aob aoc aoi aol aoo aop aor ap- apa apb apc api apl apo app apr ar- ara arb arc ari arl aro arp arr b-p baa bab bac bai bal bao bap bar bba bbb bbc bbi bbl bbo bbp bbr bca bcb bcc bci bcl bco bcp bcr bi- bia bib bic bii bil bio bip bir bla blb blc bli bll blo blp blr boa bob boc boi bol boo bop bor bpa bpb bpc bpi bpl bpo bpp bpr bra brb bri brl bro brp brr c-- caa cab cac cai cal cao cap car cba cbb cbc cbi cbl cbo cbp cbr cca ccb ccc cci ccl cco ccp ccr ci- cia cib cic cii cil cio cip cir cl- cla clb clc cli cll clo clp clr co- coa cob coc coi col coo cop cor cpa cpb cpc cpi cpl cpo cpp cpr cra crb crc cri crl cro crp crr ia- iaa iab iac iai ial iao iap iar iba ibb ibc ibi ibl ibo ibp ibr ica icb icc ici icl ico icp icr iia iib iic iii iil iio iip iir il- ila ilb ilc ili ill ilo ilp ilr io- ioa iob ioc ioi iol ioo iop ior ipa ipb ipc ipi ipl ipo ipp ipr ir- ira irb irc iri irl iro irp irr l-p la- laa lab lac lai lal lao lap lar lba lbb lbc lbi lbl lbo lbp lbr lca lcb lcc lci lcl lco lcp lcr lia lib lic lii lil lio lip lir lla llb llc lli lll llo llp llr loa lob loc loi lol loo lop lor lpa lpb lpc lpi lpl lpo lpp lpr lra lrb lrc lri lro lrp lrr o-i oaa oab oac oai oal oao oap oar ob- oba obb obc obi obl obo obp obr oc- oca ocb occ oci ocl oco ocp ocr oia oib oic oii oil oio oip oir ola olb olc oli oll olo olp oo- ooa oob ooc ooi ool ooo oop oor op- opa opb opc opi opl opo opp opr or- ora orb orc ori orl oro orp orr p-p paa pab pac pai pal pao pap par pba pbb pbc pbi pbl pbo pbp pbr pca pcb pcc pci pcl pco pcp pcr pia pib pic pii pil pio pip pir pla plb plc pli pll plo plp plr poa pob poc poi pol poo pop por ppa ppb ppc ppi ppl ppo ppp ppr pra prb prc pri prl pro prp prr ra- raa rab rac rai ral rao rap rar rba rbb rbc rbi rbl rbo rbp rbr rca rcb rcc rci rcl rco rcp rcr ria rib ric rii ril rio rip rir rla rlc rli rll rlo rlp rlr roa rob roc roi rol roo rop ror rpa rpb rpc rpi rpl rpo rpp rpr rra rrb rrc rri rrl rrp rrr