b[be]=b[]
L1:b1[be] TB~=L1:b1[] TB~
L2:b2[be] TB~=L2:b2[] TB~
L3:b3[be] TB~=L3:b3[] TB~
L4:b4[be] TB~=L4:b4[] TB~
b[seem]=b[]
L1:b1[seem] TB~=L1:b1[] TB~
L2:b2[seem] TB~=L2:b2[] TB~
L3:b3[seem] TB~=L3:b3[] TB~
L4:b4[seem] TB~=L4:b4[] TB~
b[appear]=b[]
L1:b1[appear] TB~=L1:b1[] TB~
L2:b2[appear] TB~=L2:b2[] TB~
L3:b3[appear] TB~=L3:b3[] TB~
L4:b4[appear] TB~=L4:b4[] TB~
b[look]=b[]
L1:b1[look] TB~=L1:b1[] TB~
L2:b2[look] TB~=L2:b2[] TB~
L3:b3[look] TB~=L3:b3[] TB~
L4:b4[look] TB~=L4:b4[] TB~
b[become]=b[]
L1:b1[become] TB~=L1:b1[] TB~
L2:b2[become] TB~=L2:b2[] TB~
L3:b3[become] TB~=L3:b3[] TB~
L4:b4[become] TB~=L4:b4[] TB~
