________________________ l l l l l l l l l l l l l l l l l l l l l l l l l l ll l ______ ______ l l l O l l O l l l ----------- ---------- l l l l ___ ___ l l ___ ___ l l ___ ___ l l l l l ------------------------------------------ / \ / \ / / \ \ / / \ \ | | | | | | | | | | | | \ \--------------------------------/ / \ ---------\ /---------/ | \ / | | \ / | | 0 | | 0 | |______| /\ |_______| / / \ \ / / \ \ | | | | | | | | | | | | | | | | | | | | ------------------ ----------------- / \ / \ / \ / \ -------------------- ------------------
