Take the eight triple-signgroup successions of part B (upper right) ; and the pattern that they form:
The outer left and right triple, which are tied up with the six horizontal triples by pairs of related signgroups, each holds three linkages, like two interwoven kapital E's. The six horisontal triples, are moreover connected two by two by "pairs of signgroups", and the last component of each of those triples is alternately in pair with one of the components of the two vertical triples.
In between the consequtive pair of signgroups in the triples, all the unpaired signgroups are placed, like a cementing material.
All things considered, part A match the same piece. Voilą - A prototype for both faces -, meaning related structures.

COMPLEX SETS OF OBSERVATIONS IN ACCORDANCE WITH THE CALENDAR YEAR
Through a wealth of similar small observations, as the one above, which 'with sovereignty' undermine any earlier notion of the sign groups on the disc as representatives for written words, I became the first to retrieve this lost secret from our ancestors.

The Phaistos disc alias the Minoan calendar

PROTOTYPE