|



|
| right twill, when lying on left edge |


|
| right twill, when lying on left edge |

|
| right twill, when lying on left edge |




|
| proto-type, left twill |

|
| leftt twill, when lying on left edge |

|
| left twill, when lying on left edge |

|
| left twill, when lying on left side |
|
 |


|
| fine twill, when lying on left edge |


|
| left twill, when lying on left edge |

|
| left twill, when lying on left edge |





|
| proto-type, right twill |

|
| right twill, when lying on left edge |

|
| right twill, when lying on left edge |

|
| right twill, when lying on left side |
|