The three lower sections (b, e, d,) with the three lower of the second page
doubtless formed a whole. Each of these sections contained a normal
Tonalamatl of the commonest kind, which was introduced on the left by five day-signs having a difference of 12 and was thus divided into five sections of 52 days each. In sections b and d, at least, these periods seem to be divided into equal halves of 26 days each. In d alone we recognize the initial week day, VII, of the Tonalamatl.