Pattern 1 (P1): ------------------------------------------------------- ------------------------------------------------------- ----------------------------4------4------4------4----- 4------4------4------4------x------x------x------x----- 5--5-5-5--5-5-5--5-5-5--5-5-5--5-5-5--5-5-5--5-5-5--5-5 7-7-7--7-7-7--7-7-7--7-7-7--3-3-3--3-3-3--3-3-3--3-3-3- Pattern 2 (P2): ---------------------------- ---------------------------- --------------4------4------ 4------4------x------x------ 5--5-5-5--5-5-5--5-5-5--5-5- 7-7-7--7-7-7--3-3-3--3-3-3-- Pattern 3 (P3): --------- 7-7-12-10 7-7-12-12 9-9- 9- 9 --------- --------- Pattern 4 (P4): ---------------------------- ---------------------------- ---------------------------- 4------4------4------4------ 5--5-5-5--5-5-5--5-5-5--5-5- 7-7-7--7-7-7--7-7-7--7-7-7-- Overlay 1 (mild distortion, flange) (O1): --------------------------------------- 14~-12h14p12-10~-12-14~-12h14p12-10~-12 --------------------------------------- --------------------------------------- --------------------------------------- --------------------------------------- Overlay 2 (O2): -------------------------------- -------------------------------- -----11--------12-12-16-11-11-9- 12-12--11-11-11----------------- -------------------------------- -------------------------------- atd-i forever