a-a a-c aaa aac aan aao aap aaw ac- aca acc acn aco acp acw an- ana anc ann ano anp aoa aoc aon aoo aop aow ap- apa apc apn apo app apw aw- awa awc awn awo awp aww c-- caa cac can cao cap caw cca ccc ccn cco ccp ccw cn- cna cnc cnn cno cnp cnw co- coa coc con coo cop cow cpa cpc cpn cpo cpp cpw cw- cwa cwc cwn cwo cwp naa nac nan nao nap naw nca ncc ncn nco ncp ncw nna nnc nnn nno nnp nnw no- noa noc non noo nop now npa npc npn npo npp npw nwa nwc nwn nwo nwp oaa oac oan oao oap oaw oc- oca occ ocn oco ocp ocw on- ona onc onn ono onp oo- ooa ooc oon ooo oop oow op- opa opc opn opo opp opw owa owc own owo owp oww p-p paa pac pan pao pap paw pca pcc pcn pco pcp pcw pn- pna pnc pnn pno pnp pnw poa poc pon poo pop pow ppa ppc ppn ppo ppp ppw pwa pwc pwn pwo pwp waa wac wan wao wap waw wca wcc wcn wco wcp wcw wn- wna wnc wnn wno wnp wnw woa woc won woo wop wow wpa wpc wpn wpo wpp wwa wwc wwn wwo wwp www