After this I won’t ever complain about English spelling system any more.

Other European languages having phonetic spellings fail miserably e.g.

• Italian undici + due = dodici + uno
• Spanish: once + dos = doce + uno
• Fr*nch: onze + deux = douze + un
• Romanian: unsprezece + doi = doisprezece + unu (almost there! only a “u” remains)