-al a-a aaa aal aap aar aax al- ala all alp alr alx ap- apa apl app apr apx ar- ara arl arp arr arx ax- axa axl axp axr axx l-p la- laa lal lap lar lax lla lll llp llr lpa lpl lpp lpr lpx lra lrp lrr lxr lxx p-p paa pal pap par pax pla pll plp plr plx ppa ppl ppp ppr ppx pra prl prp prr prx pxl pxr ra- raa ral rap rar rax rla rll rlp rlr rpa rpl rpp rpr rpx rra rrl rrp rrr rxp rxr xaa xal xap xar xla xlr xpa xpl xpp xrx xxl xxp xxx