#!/usr/bin/perl -l $_=pop;chop while print,s/.(?=(.))/$&+$1-9*($&+$1>9)/ge
#!usr/bin/perl -l $_=pop;chop while print&&s/.(?=(.))/$&+$1-9*($&+$1>9)/ge
#!/usr/bin/perl -l $_=pop;while(/./){print;s/.(?=(.))/$&+$1-9*($&+$1>9)/ge;chop}