------4---444---4s6-4----------------------------------------------- ---s6---6-----6-------4s66-4-6-4s22---2-2---s6--4-6-4s22----2-2---s6 ------------------------------------4----4---------------4----4----- -------------------------------------------------------------------- -------------------------------------------------------------------- -------------------------------------------------------------------- -------------------------------------------------------------------- ---4-6--4s22---2-2---s6---444--2-2---------------------------------- -------------4-----4------------------------------------------------