I need help creating a PERT chart. In the PERT chart you also need to put early start, early finish, late start, late finish, and slack.

Below is the data that is to be used:

Activity Activity Time $($days$)$ Immediate Predecessor$($s$)$

A $8--$

B $4--$

C $3$ A

D $9$ B

E $3$ B

F $3$ C$,$D

G $6$ C

H $2$ C$,$D$,$E

I $13$ E

J $15$ D$,$E

K $3$ F$,$G

L $7$ G$,$H$,$I

M $2$ I,J

N $4$ K$,$M

O $6$ H$,$M

P $5$ N$,$L$,$O