frim the extensive form of the kidapping game, how many strategy do Alex and Bart have?

please provide with full explaination. thank you

Alex - not leidnap Do kiduge Bart Tell recalex Bart 5 Do not Tell Secret Alex a kill Release Bart z bill Refeare/ Bart, Tell solice Alex 4 Dom Burt O rell - Do not fell bolice V A Alex 4. Bart o Do not Tell police . Alex Alex Alex 5 Tell Bart's Alex 1 Bart 4 secret Bart 2 police Alex 5 Bart 2 Do not Tell Bart's Secret/ Alex 1. Bart 3 Alex 2 Rart 1