Step 1: Check Sentence A.
"A" is grammatically flawed — "The rightfully believing" is incorrect; it should be "Rightfully believing" or "Believing rightfully." Also, "his geniuses in poetry laid" is wrong; correct usage is "his genius in poetry lay."
Step 2: Check Sentence B.
"Personal utterances is beset" is incorrect; it should be "are beset." The structure is grammatically faulty.
Step 3: Check Sentence C.
"He thus has to technique" is incorrect; the proper phrase is "He thus has a technique." Also, "some how" should be "somehow," and "retained" should be "retain."
Step 4: Check Sentence D.
"The theory the mask" is grammatically incorrect; it should be "the theory of the mask."
Step 5: Conclude.
All four sentences (A, B, C, and D) are grammatically or structurally incorrect.
\[
\boxed{\text{A, B, C and D}}
\]