WITH RECURSIVE m(l,r)AS(SELECT 2,v FROM i UNION ALL SELECT CASE WHEN substr(r,1,8)IN('00000000','00000001','00000011','00000110','00001010','00001111','00010101','00011100','00100100','00101101','00110111','01000010','01001110','01011011','01101001','01111000','10001000','10011001','10101011','10111110','11010010','11100111','11111101')THEN 1 ELSE 0 END,substr(r,10)FROM m WHERE r!='')SELECT l FROM m WHERE l!=2