Most people in first world countries will probably understand 'L' and 'R' anyway. But hypothetically, the problem could probably be solved by adding another letter, the same way we know that 'T' is for 'Tuesday' and 'Th' is for 'Thursday.'
the same way we know that 'T' is for 'Tuesday' and 'Th' is for 'Thursday.'
As a non native speaker I have to admit I actually didn't know that.
But in German you also use two letters for all the weekdays.
Mo, Di, Mi, Do, Fr, Sa, So.
But it is a popular riddle for children to ask
M, D, M, D, what comes next?