Shell script, how to crack string corresponding to the md5sum before the random number?

The following string is known to be the result of the random number variable md5sum|cut-c 1-8 intercept, please crack these strings corresponding to the md5sum before the random corresponding number?
[Email protected] md5]#CatZifuchuang2102929900205d1ca3da16771f6d12dd890684b[[email protected] md5]#CatShuzi.SH #!/bin/Bash forIinch`seq 1  65535` Doa=`Echo$i |md5sum|Cut-C1-8`     Echo$i $a >>caihong.db Done[email protected] md5]# bash Shuzi.SH[email protected] md5]#lscaihong.dbfileRandom2.SHRandom3.SHRANDOM4.SHRandom.SHShuzi.SHSuijishu Zifuchuang[email protected] md5]#grep 21029299caihong.db25667 21029299[email protected] md5]#grepa3da1677 caihong.db25345A3da1677[[email protected] md5]#grep1F6D12DD caihong.db70411f6d12dd[[email protected] md5]#grep890684b caihong.db10082890684ba[[email protected] md5]#grep00205d1c caihong.db134600205d1c[[email protected] md5]#grep890684b caihong.db10082890684ba[[email protected] md5]#VIZifuchuang [[email protected] md5]#

Shell script, how to crack string corresponding to the md5sum before the random number?