1869, Juan Junquera Huergo,Gramática Asturiana[1]:
Entonces el abecedario asturiano constaría de 24 letras, cuyos caracteres y nombres serían los siguientes: Aa, Bb, Cc, Ch ch, Dd, Ee, Ff, Gg, Ii, Ll, Ll ll, Mm, Nn, Ññ, Oo, Pp, Rr, R̄r̄, Ss, Tt, Uu,X̄,x̄, Yy, Zz
Then, the Asturian alphabet would consist of 24 letters, whose characters and names would be the following:Aa, Bb, Cc, Ch ch, Dd, Ee, Ff, Gg, Ii, Ll, Ll ll, Mm, Nn, Ññ, Oo, Pp, Rr, R̄r̄, Ss, Tt, Uu,X̄,x̄, Yy, Zz
This letter was used historically by various authors (especially before the late 19th century), in order to distinguish "x" (/ks/), but it is no longer used. It's not commonly used in re-editions of old Asturian literature that originally used it.
