·    A. Flint:

o Both ends: 3-4 longish ticks

o Middle: slightly curved band with two touching dots on one side

·    B. Boulder: similar to the flint form but the curved band is always vertical, and with a bold ceiling.

Notes

·    Do not confuse the flint variant of su with te, which also has “whiskers”.

o te has “whiskers” in one half only, whereas su has “whiskers” at both the extremities.

o te has only two “whiskers” wherever there are “whiskers”, whereas su has three or more “whiskers”.

·    Do not confuse the boulder variant of su with the full variant of sa:

o sa has two symmetrically placed “combs” with a double vertical band between them whereas su has only a single vertical band separating the two halves with “whiskers” (which only superficially resemble the combs of sa).

o sa has dots at the end of each tooth of the comb whereas su has no dots at the end of each “whisker”.

o sa has no dots associated with the double vertical bands down the middle whereas su has two touching dots on one side of the single vertical band.