ized ▁con son ants , ▁so ▁the ▁only ▁con son ants ▁that ▁become ▁nas al ▁are ▁those ▁in ▁a ▁cluster ▁preceding ▁a ▁nas al ▁v owel ▁( and ▁c oda ▁ ▁after ▁a ▁nas al ▁v owel ); ▁a ▁preceding ▁or al ▁v owel ▁blocks ▁the ▁nas ality ▁from ▁spread ing ▁to ▁preceding ▁sy ll ables . ▁ ▁Ph on ot act ics ▁X av ante ▁sy ll ables ▁are ▁of ▁the ▁forms ▁CV , ▁C CV , ▁C VC , ▁CC VC , ▁CV : , ▁and ▁C CV : ; ▁that ▁is , ▁all ▁sy ll ables ▁begin ▁with ▁a ▁con son ant , ▁sometimes ▁two ; ▁they ▁may ▁option ally ▁either ▁end ▁with ▁a ▁con son ant ▁or ▁have ▁a ▁long ▁v owel . ▁Although ▁a ▁sy ll able ▁may ▁end ▁in ▁a ▁con son ant , ▁a ▁ph on ological ▁word ▁may ▁not , ▁apart ▁from ▁a ▁few ▁cases ▁of ▁word - final ▁. ▁ ▁The ▁att ested ▁initial ▁CC ▁con son ant ▁clusters ▁are : ▁ ▁. ▁All ▁seven ▁ob stru ents ▁occur ▁in ▁final ▁position , ▁but ▁in ▁a ▁maximal ▁CC VC ▁sy ll able ▁only ▁ ▁are ▁att ested . ▁Ac ross ▁two ▁sy ll ables , ▁the ▁following ▁CC ▁sequences ▁are ▁att ested : ▁▁ ▁. ▁There ▁are ▁also ▁C CC ▁sequences ▁such ▁as ▁ ▁( c oda ▁ ▁followed ▁by ▁on set ▁). ▁ ▁The ▁v ow els ▁ ▁and ▁ ▁are ▁rare , ▁and ▁not ▁att ested ▁in ▁maximal ▁CC VC ▁sy ll