this is a super cool puzzle game! i would've played it all the way through, but i think i managed to softlock it by being too much of a nuisance and getting a seed stuck in the first horizontal area
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so, i brought a two-high seed from the previous area to the room with one horizontal spot, one vertical spot, a key and a lock. i put the two-high seed down into the horizontal spot, thinking i'd be able to carry the four-high seed across the gap, but when i tried it i fell down into the gap and the four-high seed fell on the other side of the gap