Hello I need help understanding BLP system

Consider a BLP system with the following clearances (classifications) and category sets:

-3 clearances/classification: U S TS

-3 category sets: {ASIA, EUR, US}, {EUR, US}, {US}

(do not consider other unlisted category sets, like {ASIA} or {EUR}. They won't appear in the system)

Question: Assuming Alice is assigned the security level {U, {ASIA, EUR, US}), list all the security levels (of objects) that she can read and all the security levels (of objects) that she can write by BLP policy.