you can create an account if you have -lrb- a -rrb- a pre-existing google account ; -lrb- b -rrb- a pre-existing pokémon trainer club -lrb- `` ptc '' -rrb- account ; -lrb- c -rrb- a pre-existing account with facebook , or -lrb- d -rrb- such other pre-existing third-party accounts as we may choose to support in the future -lrb- notification of which will be provided by allowing selection of such pre-existing accounts on the relevant account-creation screen -rrb- .