を前提に => On the premise of N1
Premise
うちに => While... N3
どちら => Where N5
Doubt
たちまち  => Immediately, Quickly, Suddenly, In a moment or flash N2
Status
ここ/そこ/あそこ/こちら/そちら/あちら => here / there / over there N5
Spatial relations
うちに => While; Before ~ N2
のうちに => Within... N3
Limit
ちょっと => a little N4
More or less in quantity
たち => Plural form N5
Amount
ちょっと => Hey (call someone) N3
Order
うち (で/ から) => Among, within... N3
Scope
と~と~どちら~か => Comparison N5
Compare