S and T

S and T are a different type of hybrid. Even though their motions are a matching shift type (pro|pro, anti|anti), each has one hand leading and the other following. Though this doesn't affect their base forms, it produces additional variations when modifying their motions. S and T are the only letters that have a leader and follower while both hands share the same motion type.

Fortunately, we have a tool to disambiguate hybrids: the high/low slots. For S and T, high = leading and low = following.

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halfway

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mixed

S-High-One - both hands prospin; the leading hand carries the turn, the following hand only travels

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halfway

end

mixed

S-Low-One - both hands prospin; the following hand carries the turn, the leading hand only travels

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halfway

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T-High-One - both hands antispin; the leading hand carries the turn, the following hand only travels

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halfway

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mixed

T-Low-One - both hands antispin; the following hand carries the turn, the leading hand only travels

Note that these leading/following rules do NOT apply to U and V. Even though U and V have a leader/follower, their slots refer to pro/anti.