▁the ▁Tot on ac ▁of ▁El ▁T aj in , ▁notes ▁the ▁mechanical ▁character ▁of ▁the ▁gl ott al ▁closure ▁and ▁at ▁the ▁same ▁time ▁he ▁points ▁at ▁the ▁“ oper ative ▁importance ” ▁in ▁certain ▁positions ▁( G arc ía ▁Ram os , ▁l 9 7 9 : ▁ 1 5 3 ). ▁He ▁also ▁presents ▁a ▁series ▁of ▁occ lus ive ▁gl ott al ized ▁con son ants ▁listed ▁here : ▁ ▁/ p <0xC9> <0x81> /, ▁/ t <0xC9> <0x81> /, ▁/ k <0xC9> <0x81> /, ▁/ q <0xC9> <0x81> /, ▁/ c <0xC9> <0x81> /, ▁/ č <0xC9> <0x81> /, ▁/ λ <0xC9> <0x81> /. ▁ ▁In ▁the ▁variant ▁that ▁is ▁studied ▁here , ▁there ▁is ▁an ▁observed ▁t endency ▁to ▁the ▁disapp earance ▁of ▁the ▁gl ott al ▁as ▁real ization ▁of ▁the ▁ph on eme ▁/ <0xC9> <0x81> / ; ▁this ▁phenomen on ▁is ▁also ▁mentioned ▁by ▁Mc Qu own ▁in ▁the ▁Co ate pec ▁variant : ▁“ the ▁ph on eme ▁/ <0xC9> <0x81> / ▁disappear ▁under ▁various ▁circumstances ” ▁( Mc Qu own , ▁ 1 9 9 0 : ▁ 8 5 - 8 6 ). ▁ ▁V ow els ▁▁ ▁/ i / ▁front , ▁high , ▁closed , ▁not ▁rounded ▁ ▁five ▁allo ph ones : ▁ ▁[ i ], ▁[ ĩ ], ▁[ ε ], ▁[ ɛ ̃ ], ▁[ ị ] ▁ ▁/ i :/ ▁front , ▁high , ▁closed , ▁not ▁rounded , ▁long ▁ ▁Three ▁allo ph ones