2 adverbs to describe how to or

For (if one may be fairly frank) They barge across from bank to bank, With zig-zag motions, in and out, As though torpedoes were about; Whilst I with all an expert's ease Glide by as gaily as you please, Or calmly, 'mid the rout of punts, Perform accomplished super-stunts.

The utmost malice of their stars is past, And two dire comets, which have scourged the town, In their own plague and fire have breathed the last, Or dimly in their sinking sockets frown.

2 adverbs to describe how to  or  - Adverbs for  or