x+ a number = muted EI-x3-x3-x3-x3-x3-x3-x3-x3-x3-x3-x3--------|x3 AI-x5-------x5-------x5-------x5-----------|x5 DI-----------------------------------------| GI-----------------------------------------| X2 BI-----------------------------------------| eI-----------------------------------------| EI-x5-x5-x5-x5-x5-x5-x5-x5-x5-x5-x5--------|x5 AI-x7-------x7-------x7-------x7-----------|x7 ID-----------------------------------------| GI-----------------------------------------| X2 BI-----------------------------------------| eI-----------------------------------------| EI-x1-x1-x1-x1-x1-x1-x1-x1-x1-x1-x1--------|x1 AI-x3-------x3-------x3-------x3-----------|x3 ID-----------------------------------------| GI-----------------------------------------| X2 BI-----------------------------------------| eI-----------------------------------------| EI-x7-x7-x7-x7-x7-x7-x7-x7-x7-x7-x7--------|x7 AI-x9-------x9-------x9-------x9-----------|x9 ID-----------------------------------------| GI-----------------------------------------| X2 BI-----------------------------------------| eI-----------------------------------------|