Note: Certain mutated forms of some words can never occur in standard Welsh. All possible mutated forms are displayed for convenience.
References
^ R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “cochder”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies