Puzzles - Missing letters puzzles

Starting in the bottom left corner of the diagram, and moving clockwise, letters follow in alphabetic order, skipping 1 letter, then 2, then 3 etc.

Starting with the top left outer segment and moving clockwise, alternating between the inner and outer segments, letters advance through the alphabet 5 letters at a time. Starting with the top left inner segment, follow the same pattern, using every sixth letter.

Starting with the A in the top left segment of the circle, and moving clockwise, letters follow a modified alphabetic sequence. To make the sequence, write the alphabet, removing all letters written with any curved lines, then take alternate letters from this sequence.