Where does “Länsi-Pakila” come from?

Länsi-Pakila (Finnish) comes from Finnish Pakila, from Swedish Baggböle, from Swedish bägge, from Old Norse beggja, from Proto-Germanic bajjǫ̂, from Proto-Germanic bai, from Proto-Indo-European bʰoh₁ — both.

Ancestry of “Länsi-Pakila”, step by step

Länsi-Pakila traces back through two separate lines of ancestry.

via Finnish Pakila

Step	Language	Word	Meaning
1	Finnish	Pakila	—
2	Swedish	Baggböle	—
3	Swedish	bägge	both
4	Old Norse	beggja	genitive of báðir
5	Proto-Germanic	bajjǫ̂	—
6	Proto-Germanic	bai	both
7	Proto-Indo-European	bʰoh₁	both

via Finnish länsi

Step	Language	Word	Meaning
1	Finnish	länsi	west; the West
2	Proto-Finnic	länci	west
3	Proto-Finnic	lanci	lowland

Every word from Proto-Indo-European bʰoh₁ →Every word from Proto-Germanic bai →Every word from Proto-Germanic bajjǫ̂ →