(<'ab') (1 e. E.)&> 'ac';'cab';'bca';'bab' NB. quicker? 0 1 0 1
(<'ab') ([: +./ E.)&> 'ac';'cab';'bca';'bab' 0 1 0 1 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
