とろん

Adverb taking the 'to' particle, onomatopoeic or mimetic word

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ことんことん

clunk; thump

ところをところを

although (it is a certain time or something is in a certain condition); even though normally

そんなところそんなところ

that's about it; sounds about right; something along those lines; that pretty much sums it up

と言うところ「というところ」「とゆうところ」

the point of ...; the place where ...; the part where ...; a position described as ...

すとんすとん

with a thump