Anonymous user's (DirkL) improvement: shorter solution but still using 6 characters (u:1023 |) is possible. Using | as residue operator for decimals e.g. 1011223 | 11001100011002333333 = 84.
u:1011 1101 1011 1011 1111 1011 1101 1001 1101 1011 1001 1101 1011 1001 1011 1011 1101 1011 1111 1011 1101 1011 1001 1111 1101 1011 1011 1001 1011 1101 1011 1011 1101 1011 1011 1001 1101 1111 1111 1011 1011 1011 1111|1100110001100223|2333333 10101010100232333323 1013223 110000032 10001011123223333 11000111001023222222 10101010101323232 1100322 10001000011132333323 110000032 1000001100322333 10101010110232333333 1113233 100011102323333 1103232 110000032 100112332 1113233 10011032232 110000032 100010000110323233 11000111001023222222 11102323323 1011123223332 101010101113223333322 110000032 1113233 10100011102323332 1013223 10101010110232333333 110000032 110001000110032333332 10101010100232333323 1013223 110000032 10000011102323322 100000101010322332 11011132332223 10011132233 110000032 100323 1113233 1000101012333 The quick brown fox jumps over the lazy dog
And that solution can further be improved using (u:23 |). (DirkL)
u:223|2333333 232333323 3223 32 23223333 23222222 323232 322 32333323 32 322333 232333333 3233 2323333 3232 32 2332 3233 32232 32 323233 23222222 2323323 23223332 3223333322 32 3233 2323332 3223 232333333 32 32333332 232333323 3223 32 2323322 322332 32332223 32233 32 323 3233 2333
The quick brown fox jumps over the lazy dog