please solve it

.: Serializability Testing: Constructing the precedence graphs for schedules E and F to test for conflict Serializability. (b) Transaction T Transaction T2 Transaction T3 read_item(z); read_item(Y); write_item(Y); read_item(Y); read_item(Z); Time read_item(X); write_item(X); write_item(V); write_item(z); read_item(X); read_item(Y); write_item(Y); write_item(X); Schedule E (c) Transaction T Transaction T2 Transaction Tz read_item(Y); read_item(Z); read_item(X); write_item(X); Time write_item(Y); write_item(z); read_item(Z); read_item(Y); write_item(Y); read_item(Y); write_item(Y); read_item(X); write_item(X); Schedule F