2model (1) 1-Model--(1) 1-Model--(2) 1-Model--(3) 1-Model--(4) 1-Model--(5) 1-Model--(6) 3product (1) 2product-(1) 2product-(3) 2product-(5) 2product-(7) 2product-(8) 2product-(9) 2product-(10) 4detail (1) 3detail--(1) 3detail--(2) 3detail--(3) 3detail--(4) 3detail--(5) 3detail--(6) 5physical (1) 4physical--(2) 6 internal (1) 5internal-(1) 5internal-(2) 7 recommend