isotype of said plan (square with a dark background with an arrow). Likewise, all patents have the phrase REGISTRO CIVIL E IDENTIFICACION on their left end, forming an oval; while on the far right it reads CASA DE MONEDA DE CHILE, forming a circle in which is the emblem of the Chilean Mint. These inscriptions are embossed on the metal plate, but with no paint on them, so they are only visible up close. The font used throughout this system is Helvetica Medium Condensed. Current format BB-BB 10 (2007-present) In September of 2007 the new format began to be used, which is made up of 4 letters and 2 numbers ('BB-BB·10). This system uses 18 letters, which are: B, C, D, F, G, H, J, K, L, P, R, S, T, V, W, X, Y, Z. The letters M, N are not used (the 2 previous ones for sure not to have combinations that are CTM, PN, WN or even FPMR (Due to its similarity with the Frente Patriótico Manuel Rodríguez), Ñ, Q ( for its resemblance to the O and the number 0), and the vowels (to avoid combinations that form words and thus bother vehicle drivers)). Although new vehicle plates use the BB·BB-10 format, the previous plates were not superseded, so the two formats currently coexist. The combination allows for a vehicle park of 9,447,840 (excluding Police, Armed Forces and Firefighters vehicles). The numbers start at 10 for each series of letters, up to 99. The letters continue to be separated from the numbers by a simplification of the National emblem, and the 4 letters in 2 groups of 2 letters by a black circle. The design (frame and font) are the same as in the previous format. Considering the pace of vehicle registrations before the start of the format, the numbering of these patents was expected to last around 38 to 40 years. However, due to the increase in vehicle sales, the first four initial letters (B to F) were exhausted in just 6 years, and half of the series (B to L) in just 12 years, so it seems unlikely that the combinations will even reach 25 or 30 years, unless more letters are added to the combination (for example, increasing from 18 to 20 letters increases the number of combinations by 52%. As in the old format, the license plates have the word CHILE included