This reverts commit aa765c7680.

With properly ordered diacritics using replace rules before,
shadda should be always directly after consonant

considering it may not be immediately after consonant

This group is used as a padding between consonant letter and its other diacritics
which may be in arbitrary order

Letter groups A, B, C, E etc. should be redefined in C code
t https://github.com/espeak-ng/espeak-ng/blob/master/docs/dictionary.md#redefinition-of-charater-groups