Layout: [A] [B][D][E] [C]...[F] Relate: [B]->[A],[C] [D]->[B],[E],[F]
Layout: [A] [B][D][F][G][I] [C][E]...[H][J] Relate: [B]->[A],[C] [D]->[B],[E],[F] [H]-D[F],[G],[I],[J]
Layout: [A][D][E] [B] [C] Relate: [A]->[B],[C] [B]->[C] [D]->[E] [D]-D[E]
Layout: [A][D][E] [B] [C] Relate: [A]->[B],[C] [B]->[C] [D]->[E] [D]-D[E]