摘要：This paper studied about the management of vowel sequences and consonant sequences in Toba Batak language. The management of vowel sequences and consonant sequences studied the sounds of language by imitating the speech of someone who uses his language and studied the sounds of language guided by sound symbols, and how speech organs can produce sounds perfectly, and analyze the sounds produced by human speech. The goal is to establish the management of phonotactic structure in the Toba Batak language. This study contributes as material or textbooks for high school (SMA) and as guidelines for the community. It also reveals the principles of language universality by segmenting language sounds, classifying patterns and classes of human language sounds, analyzing their phonological processes, explaining variations in word sounds, and describing changes in human language sounds. It also scientifically contribute is phonology as the study of sounds of language as the smallest unit of the combination of sounds that form syllables. The method used in this research is a qualitative method with interactive model that can reflect reality based on facts. Vowel sequences in this research consist of 44 pieces, that are: /ai-/, /-ai-/,/-ai/, /-ao-/, /-ao/, /au-/, /-au-/, /-au/, /ae-/, /-ae-/,/-ae/, /ia-/, /- ia-/, /-ia/,/iu-/, /-iu-/, /-iu/, /io-/, /-io-/, /-io/, /ua-/, /-ua-/, /-ua/, /-ui-/, /-ue-/, /-ue/,/ea-/, /-ea-/, /- ea/,/-eu-/, /-eu/, /-eo-/, /-eo/, /-oa-/, /-oa/, /-oi-/, /-oi/,/-io-/, /-ou/, /-uo/, /-aoa-/, /-uae-/, /-aio-/, and /-aua-/. Consonant sequences in this research consist of 32 pieces, that are: a) consonant sequences started with /k/ sound, are: /-kl-/, /-kb-/,/-kp-/, and /-kt-/. b) consonant sequences started with /l/ sound, are: /-lt-/. /-ls-/, /-lp-/, /-lg-/, and/-lb-/. c) consonant sequences started with /m/ sound, are: /-mb-/, /-mp-/, and /-ml-/. d) consonant sequences started with /n/ sound, are: /- nd-/, /-nj-/, /-nt-/, /-ns-/, /-ng-/, /-ngj-/, /-ngp-, /-ngt-/. e) consonant sequences started with /p/ sound, are: /-pr-/, /-ph-/, /-ps-/, and/-pg-/. f) consonant sequences started with /r/ sound, are: /- rg-/, /-rs-/, /-rj-/, /-rt-/, /-rh-/, and /-rn-/. g) consonant sequences started with /s/ sound, are: /-sr-/, /-sd-/, and /-st-/. h) consonant sequences started with /t/ sound, are: /-tm-/ and /-ts-/.
