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Interrogatively: P. and V. ποῖ; Indirect: P. and V. ὅποι, ἵνα (rara P.).
Relative: P. and V. οἷ, οἷπερ, ὅποι, V. ἔνθα.
whither of two directions, indirect: P. ὁποτέρωσε.
whithersoever: P. and V. ὅποι, ὅποιπερ, ὅποι ποτέ, ὅποι ἄν (with subj.), ὅποιπερ ἄν (with subj.).