Further, more polite forms are also possible. These involve the "i-form" of the verb rather than the "te form", and an honorific prefix (see honorific prefixes: verbs, below). Beyond simply increased politeness, this form is more formal, and is used when addressing a group, or as a general instruction, rather than directed at a particular person. For example, "tsukau", "use", becomes "o tsukai kudasai": "please use this". In the case of phrasal verbs the honorific "o" appears before the entire phrase, not simply the verb, as in , from . Politeness can be carried even further by conjugating kudasaru into its masu form and using the imperative, which becomes "o tsukai kudasaimase." The most polite form of this would probably be along the lines of "o tsukai ni natte itadakimasen deshou ka." "You will probably not bestow the favor of honorably using this?" Language like this, however, is rarely used.