srotate-left input-seq rotate the input sequence left one step srotate-left[n] input-seq rotate the input sequence left n steps, modulus size(input-seq)
srotate-left (|one> . |two> . |three> . |four> . |five>) |two> . |three> . |four> . |five> . |one> srotate-left[3] (|one> . |two> . |three> . |four> . |five>) |four> . |five> . |one> . |two> . |three> -- 11 mod 5 == 1, so rotate left 1 step: srotate-left[11] (|one> . |two> . |three> . |four> . |five>) |two> . |three> . |four> . |five> . |one>