The number of letters in the ordinal numbers.
First 5 Second 6 Third 5 Fourth 6 Fifth 5 Sixth 5 Seventh 7 Eighth 6 Ninth 5 etc.
The number of letters in the ordinal numbers.
First 5 Second 6 Third 5 Fourth 6 Fifth 5 Sixth 5 Seventh 7 Eighth 6 Ninth 5 etc.