What W|O|T is I|Z IH|S I|S the D|AX function P|AH|NG|K|SH|AX|N F|O|NG|K|SH|AX|N P|O|NG|K|SH|AX|N F|AH|NG|K|S|AX|N P|AH|NG|K|S|AX|N F|O|NG|K|S|AX|N P|O|NG|K|S|AX|N of O|V AH|B O|B this D|IH|S DH|I|S D|I|S DH|IH|SH D|IH|SH DH|I|SH D|I|SH device JH|IH|V|A + I|S D|I|V|A + I|S JH|I|V|A + I|S D|IH|B|A + I|S JH|IH|B|A + I|S D|I|B|A + I|S JH|I|B|A + I|S D|IH|V|IH|S JH|IH|V|IH|S D|I|V|IH|S JH|I|V|IH|S D|IH|B|IH|S JH|IH|B|IH|S D|I|B|IH|S JH|I|B|IH|S D|IH|V|A + I|SH JH|IH|V|A + I|SH D|I|V|A + I|SH JH|I|V|A + I|SH D|IH|B|A + I|SH JH|IH|B|A + I|SH D|I|B|A + I|SH JH|I|B|A + I|SH D|IH|V|IH|SH JH|IH|V|IH|SH D|I|V|IH|SH JH|I|V|IH|SH D|IH|B|IH|SH JH|IH|B|IH|SH D|I|B|IH|SH JH|I|B|IH|SH