I think the strum pattern for the intro is just up/down. Strumming for the rest of the repeats the D#m and G#m chords and has a very reggae feel so just listen to it for a idea. Enjoy! D#m G#m C# e|----6------|----------------|----4------|-----4-----| B|----7------|--7p6----6h7/9--|----4------|-----6-----| G|----8------|-------6--------|----4------|-----6-----| D|----8------|----------------|----6------|-----6-----| A|----6------|----------------|----6------|-----4-----| E|----0------|----------------|----4------|-----0-----|