Hola, Alberto. Veo que hay dudas sobre la rimas en tus tercetos. El más reconocido estudio sobre esto lo ha realizado Dorothy Clarke en un famoso artículo, del que te pego algunas líneas. No traduzco todo el párrafo, pero resumo algunas conclusiones:
Acerca de las rimas estudiadas, en los sonetos del siglo de oro, la autora llega a la conclusión de que la regla general es (usando dos o tres rimas distintas): no poner tres rimas iguales seguidas, no dejar versos sueltos y no terminar con un pareado.
En la estadística, verás que tu esquema de rimas corresponde a algo más del 1% de los sonetos analizados (que fueron muchos y muy representativos de esa época).
UPON examining the rimes of Spanish Golden Age sonnets, I have
found that the general rule for the rime scheme of the tiercets was, with
few exceptions, somewhat as follows: any combination of two or three
rimes may be used provided that not more than two lines having the same
rime stand together, that no line be left unrimed, and that the sonnet do
not end with a couplet. Consecutive rimes seem to have been generally
avoided. Also, aside from the first of the two fundamental types A
(CDC-DCD) and B (CDE-CDE), Spanish poets preferred greatly the
three-rime schemes to the two-rime schemes. Certain patterns within
these limits, however, became very popular, while many other possible
patterns were rarely or never used. Moreover, one poet occasionally
favoured one pattern almost to the exclusion of the rest, while some other
poet might use another form more frequently.
The following list shows the various types used in the works I have
examined and the frequency, in percentages, of their use:
Type Pattern Percent of total Average percent
A CDC-DCD 30.26 22.10
B CDE-CDE 51.90 58.48
C CDE-DCE 6.24 8.65
D CDC-EDE 0.16 0.05
E CDE-CED 2.43 2.91
F CDE-DEC 5.30 3.81
G CDC-CDC 1.33 1.19
H CDE-EDC 1.01 1.25
I CDE-ECD 0.20 0.26
J CDD-CCD 0.08 0.07
K Misc. 0.64 0.54
(Tiercet Rimes of the Golden Age Sonnet
Author(s): Dorothy Clotelle Clarke
Source: Hispanic Review, Vol. 4, No. 4 (Oct., 1936), pp. 378-383)
abrazo
Jorge