# On a Post's System of Tag

P.R.J. Asveld

We investigate instances of Post's system of tag with alphabet $\{0,1\}$, deletion number $n=3$, set of productions $\{0\rightarrow00, 1\rightarrow1101\}$, and initial strings of the form $(100)^m$ where $m$ ranges from 1 to 32. Some other initial strings from the set $\{000,100\}^+$ are considered as well.