Li-Fan Chen => YSITD: aaab $S aaab $bTa aab $bT aab $baT aab $baaT aab $baa ab $ba b $b $ #5b82e53e63a01f6023822966

Li-Fan Chen says to YSITD

aaab $S aaab $bTa aab $bT aab $baT aab $baaT aab $baa ab $ba b $b $

at Mon, Aug 27, 2018 1:37 AM