rival: BS

Fight the guy you fight in yellow: BS

Weedle: TW, BS

Mart: 2 balls, 9 potions

Brock:
Geodude: TW until its -3, spam BS, use scratch when you have 4 BS left
Onix: Twx4, BSx4, Scratch

Center

BC1: TW, BS all

Youngster: TW, BS all

BC2:
BS
teach PS over tackle
BS, PS
BS
BS, PS

BC3:
BS
BS, PS

get water gun, teach it over tail whip

Get MP, teach it over Scratch

Hiker: WG

Rocket:
BS (PS)
BS, PS/WG

Super Nerd:
BS, WG
MP, PS
BS, MP

Center

candy x2

Rival:
BS, BS
MP
MP
BS, PS

BC:
MP
MP

Lass:
BS
BS (PS) 

Youngster:
MP
BS
MP

Lass:
BS
BS, WG

Jr. Trainer:
BS (PS)

Rocket:
BS
BS

Hiker:
WG

Lass:
BS
BS (PS)

Bottom Guy:
WG
WG
BS
WG

Lass:
MP
BS
MP

Ether?

Center

Goldeen:
BS, PS/MP

Set options to shift

Staryu: BS (PS)
If staryu hit you, swap and potion queen
Starmie: BSx2-3, PS if possible