Left: thread 糸, right: averted from the center 韋 (var. of 5 五, center 口, 5 五 (upside down)= twice five averted from center
Mnemonic
Threads away from the center (at a loom) are wefts and stand for latitude. (This is in contrast to the longitude 経 which shows a warp thread together with "vertical 圣")
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