For the projects described in Tables $10-20$ and $10-21,$ respectively, suggest a project schedule that would complete the project in minimum time and result in relatively constant or level requirements for labor over the course of the project.

TABLE $10-20$

Activity A B C D E F G H I J K

Predecessors $---------$ A B B C C D$,$E F$,$G H

Duration $35117643643$

Workers Per Day $9641016958237$

TABLE $10-21$

Activity A B C D E F G H I J K L M N

Predecessors $---------$ A A A B B C F$,$G H$,$I,L F$,$G D$,$J E$,$K

Duration $51726432645145$

Workers Per Day $0309542141041273$