20v20v4v,6w,v,6w,3v4v,w,4f,3w,4f,w,3v4v,w,f,2w,6f,w,f,w,3v3v,2w,f,6w,f,2a,f,w,3v3v,w,2f,w,2f,3w,3a,2w,3v3v,w,f,2w,f,3a,5f,w,3v3v,w,f,w,2f,a,3w,4f,w,3v3v,w,f,w,2f,a,w,v,w,4f,w,3v3v,w,f,2w,2f,w,v,w,3f,2w,3v3v,w,4f,2w,v,5w,4v3v,6w,11v20v20v113,114,132,133,134,148,149,150,168,18891,93,112,133,150,152,154,168,172,173151
