Empty strings fixed

^
(?:(?=0)(?<1>){0}|(?=1)(?<1>){10}|(?=2)(?<1>){20}|(?=3)(?<1>){30}|(?=4)(?<1>){40}|(?=5)(?<1>){50}|(?=6)(?<1>){60}|(?=7)(?<1>){70}|(?=8)(?<1>){80}|(?=9)(?<1>){90}).
(?:(?=0)(?<1>){0}|(?=1)(?<1>){1}|(?=2)(?<1>){2}|(?=3)(?<1>){3}|(?=4)(?<1>){4}|(?=5)(?<1>){5}|(?=6)(?<1>){6}|(?=7)(?<1>){7}|(?=8)(?<1>){8}|(?=9)(?<1>){9}).
,
(?:(?=0)(?<2>){0}|(?=1)(?<2>){10}|(?=2)(?<2>){20}|(?=3)(?<2>){30}|(?=4)(?<2>){40}|(?=5)(?<2>){50}|(?=6)(?<2>){60}|(?=7)(?<2>){70}|(?=8)(?<2>){80}|(?=9)(?<2>){90}).
(?:(?=0)(?<2>){0}|(?=1)(?<2>){1}|(?=2)(?<2>){2}|(?=3)(?<2>){3}|(?=4)(?<2>){4}|(?=5)(?<2>){5}|(?=6)(?<2>){6}|(?=7)(?<2>){7}|(?=8)(?<2>){8}|(?=9)(?<2>){9}).
(?(1)(?<-1>)(?(2)(?<-2>)(?<3>)(?<4>)|){100}(?(4)(?<-4>)(?<2>)|){100}|){100}
(?<-3>){143}
(?(3)(?!))
(?(1)(?!))
$