Use of the parallel sequence on a cube that is already completely solved as 3-color will misplace four edge facelets, the following example shows how to fix them. The first 10 moves are the parallel sequence, moves 11-12 make the setup for Sequence 3C-E1 which fixes the four misplaced facelets (moves 13-15). The corners are then solved with half-twists (16-18) and the cube is ready for the final step of solving the 6-color edges.