Covering Procedure
Step 1 -- Identify any minterms covered by only one PI. Select these PIs for the cover.
Step 2 -- Remove rows covered by the PIs identified in step 1. Remove minterms covered by the removed rows.
Step 3 -- If a cyclic chart results from step 2, go to step 5. Otherwise, apply the reduction procedure of steps 1 and 2.
Step 4 -- If a cyclic chart results from step 3, go to step 5. Otherwise return to step 1.
Step 5 -- Apply the cyclic chart procedure. Repeat step 5 until a void chart or noncyclic chart chart is produced. In the latter case, return to step 1.