User talk:2601:601:4000:987F:2989:A580:6B2F:423F

is used for syllables like the す in です where the vowel vanishes. It seems like you've been adding pronunciation templates with this left in, so I thought I should let you know that it actually does something (or at least, not what you think it does) (｀・ω・´)ノ —suzukaze (t・c) 03:08, 20 January 2016 (UTC)