X                         Z X        R             E  Z X                         Z X                         HTTTTTTT TTTTTTTT TTTT      H       H        H          H       H        H          H X     H        H          H X   NHMHN    NHMHN        H X   HNMNH    HNMNH        H X   NHMHN    NHMHN   M    H X E HNMNH  E HNMNH E M    H MMMMMMMMMMMMMMMMMMMM M    H MMMMMMMMMMMMMMMMMMMM M    H  XN   M        M  N  M    H  X    M    N   M     M    H  X    M        M     M    HTTTTTTTTTTTTTTTTTTTTT M    H                      MMMMMMMMMMMMMMMMMMMMMMMMMMM