Left: foot 足 (knee cap 口 and footprint 止), right: What? WHERE? 奚 (The down-reaching hand 爫 wants to fish with the thread 糸 something big 大, but: What? Where?)
Mnemonic
Where the feet that 'reach down' transform the fibers (=threads of the grasses) into something big (= flattened), a path is created.
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