Complete the sentence.Programming Blank 1 Вопрос 13 consist of a Blank 2 Вопрос 13 of rules that allows string Blank 3 Вопрос 13 to be converted into various Blank 4 Вопрос 13 of generating machine Blank 5 Вопрос 13 , or, in the case of visual programming languages, graphical Blank 6 Вопрос 13 .