ABC CROSSWORD THAT DOES'NT MAKE SENSE

1234567
Across
  1. 2. 12345678 LETTER
  2. 3. 1+2 LETTER
  3. 4. 1234 LETTER
  4. 5. 123456 LETTER
  5. 7. 123456789 LETTER
Down
  1. 1. 1234567 LETTER
  2. 2. 12345678910 LETTER
  3. 4. 12345 LETTER
  4. 6. 123 LETTER
  5. 7. FIRST LETTER